GITNUXSOFTWARE REVIEW
Finance & Financial ServicesTop 10 Best Tax Online Software of 2026
Compare tax online software tools for filing and planning needs, with an editor-style roundup of tradeoffs to help shortlist options like TaxAct and Drake.
How we ranked these tools
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Framework: Features 40% · Ease 30% · Value 30%
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TaxAct is the best pick for guided filers who want fewer e-file problems because its built-in diagnostic review highlights specific return issues before you transmit. Drake Software is the alternative for accountants and practices that need traceable, code-light client workflows with organizer intake and review routing.
Editor’s top 3 picks
Three quick recommendations before you dive into the full comparison below — each one leads on a different dimension.
TaxAct
Built-in diagnostic review highlights specific return issues before IRS e-file transmission.
Best for: Fits when filers want guided preparation with W-2 and 1099 automation and pre-e-file error checks.
FreeTaxUSA
Editor pickInteractive form preview and pre-e-file error checking surface field-level issues during preparation.
Best for: Fits when individuals need a guided return flow with strong error checking and minimal collaboration.
Drake Software
Editor pickCode-light client workflows with organizer intake and preparer review routing that keeps tax adjustments traceable through amendments.
Best for: Fits when firms need detailed tax form handling, multi-state production, and dependable e-file package output.
Comparison Table
TaxAct
SMBOnline tax preparation software for individuals, self-employed, and small businesses.
Built-in diagnostic review highlights specific return issues before IRS e-file transmission.
TaxAct handles tax return preparation through a guided workflow that maps data to federal forms and schedules, then packages the result for IRS e-file transmission and state tax e-filing. The W-2 import and 1099 processing flows reduce manual typing for users with wage and contractor income. The interface includes diagnostic review features that highlight missing items and data mismatches before the final e-file step.
A clear tradeoff is that TaxAct’s automation depth is geared toward standard tax situations rather than complex planning paths with heavy practitioner-style control. TaxAct fits best when a single filer needs a structured preparation process and wants to catch common errors before e-filing, especially for returns with W-2 and 1099 activity.
- +W-2 import and 1099 processing cut repetitive data entry
- +Diagnostic review flags missing fields and common data mismatches
- +IRS e-file transmission workflow is integrated into the return flow
- +State tax e-filing supports multi-state preparation needs
- –Fewer advanced automation controls than practitioner-first tax systems
- –Complex partnerships and detailed K-1 variance can require more manual adjustments
- –No dedicated automation API surface for custom integrations
- –E-signature and authorization steps can add friction near submission
Individual filers
Standard wage and contractor income
Less manual entry and fewer typos
Frequent multi-state filers
Two or more state returns
Consistent preparation across states
Show 1 more scenario
Bookkeeping-heavy households
Year-end data consolidation
Fewer e-file rejections
Uses on-screen reviews to identify gaps and reconcile inputs before submission.
Best for: Fits when filers want guided preparation with W-2 and 1099 automation and pre-e-file error checks.
FreeTaxUSA
SMBLow-cost online tax preparation with free federal filing for most returns.
Interactive form preview and pre-e-file error checking surface field-level issues during preparation.
FreeTaxUSA provides a drag-and-drop style return interface for many input sections, with an on-screen tax form preview that updates as entries change. The system includes error checking that flags common issues like mismatched totals and incomplete schedules before e-file transmission. For returning filers, prior-year import reduces retyping by carrying forward supported data into the next filing season workflow. The tax form library covers core federal forms and schedules and guides decisions through specific interview questions.
A key tradeoff is that collaboration features are limited compared with practitioner-focused systems that provide client organizer packages and role-based access. FreeTaxUSA fits situations where a filer or small household can handle preparation end to end without a multi-user workflow or document exchange process. It is also a strong fit for straightforward itemized or standard-deduction returns that need reliable diagnostics and accurate form assembly for IRS e-file transmission.
- +Guided interview flow keeps entries tied to specific form fields
- +Built-in diagnostics catch inconsistencies before e-filing
- +Prior-year data import reduces repetitive data entry
- +State return setup follows the same input and review patterns
- –Limited collaboration and practitioner workspace features
- –Complex business and partnership scenarios require more manual navigation
- –Less automation for document-driven workflows than e-signature packages
- –Fewer admin and governance controls than enterprise tax suites
Individual filers
W-2 and 1099 income return
Fewer preparation errors
Returning taxpayers
Prior-year carryover adjustments
Faster return preparation
Show 2 more scenarios
Households filing jointly
Multi-state return preparation
Cleaner state e-filing
State workflows use the same review patterns to catch missing or inconsistent inputs.
Solo tax preparers
Self-prep using a guided workflow
More consistent filings
Form-based interviews support consistent assembly of the federal return submission package.
Best for: Fits when individuals need a guided return flow with strong error checking and minimal collaboration.
Drake Software
vertical specialistProfessional tax preparation software for accountants and tax practices.
Code-light client workflows with organizer intake and preparer review routing that keeps tax adjustments traceable through amendments.
Drake Software targets tax return preparation and e-filing workflows for practitioners who want spreadsheet-grade control over tax inputs and reporting outputs. The product includes a structured tax form library, client data carryforward, and extensive error checking across federal and multi-state return workflows.
Drake Software also supports preparer-centric document workflows like e-signature authorization and organizer-based intake so data moves from client to return with fewer manual steps. Output management centers on generating IRS e-file transmission packages and producing clear audit trail documentation for review and amendments.
- +Strong tax form library coverage for complex return scenarios
- +Clear workflow separation between input, review, and e-file readiness
- +Good support for multi-state return production from one client dataset
- +Practical prior-year import reduces repetitive rekeying
- –Learning curve can be steep for drag-and-drop input patterns
- –Automation is workflow-driven, with limited extensibility via API compared to peers
Gift and estate tax preparers
Prepare gift and fiduciary schedules
Traceable specialty inputs
Tax professionals verifying data
Validate wage details using transcripts
Reconciled client income
Show 2 more scenarios
Independent return preparers
Repeat individual returns with carryforward
More consistent preparation
Interview-driven forms plus prior-year data reduce repeated data entry for recurring individual returns.
Accounting firms running multi-state
Assemble business returns by jurisdiction
Organized multi-jurisdiction output
Firms use workpapers and jurisdiction workflows to organize business tax calculations and schedules across states.
Best for: Fits when firms need detailed tax form handling, multi-state production, and dependable e-file package output.
TaxSlayer
SMBOnline tax preparation software serving individuals, military, and self-employed filers.
Prior-year import carries forward prior return data to reduce re-entry during new tax preparation cycles.
TaxSlayer’s return builder emphasizes structured data entry with validation and review screens that surface missing fields and likely errors during preparation. Multi-state return handling keeps state-specific inputs aligned to the same federal workflow, which reduces context switching when filing multiple jurisdictions. IRS e-file transmission steps are built into the submission flow rather than being a separate export process, which supports a smoother closeout after completing the return.
- +Guided return flow with built-in diagnostic review checks
- +Integrated IRS e-file transmission steps inside the submission workflow
- +Multi-state return preparation stays linked to one preparation run
- +Prior-year import reduces re-entry for recurring filer data
- –Limited integration depth for external prep and document systems
- –Less granular practitioner workflow governance than larger practice tools
- –Complex returns may require more manual navigation through screens
- –Automation options are narrower than API-first tax software
Independent tax preparers
Prepare standard individual returns faster
Fewer submission rework loops
Small firms
File multi-state returns in one workflow
More consistent filing flow
Show 1 more scenario
Recurring filers
Reuse last year’s numbers
Lower preparation effort
Prior-year import reduces manual re-entry when income and deductions remain similar year over year.
Best for: Fits when solo preparers or small teams want guided preparation plus reliable e-file submission checks.
H&R Block
SMBOnline tax preparation software with options for DIY and assisted filing.
Guided diagnostic review that checks return consistency across forms before IRS e-file transmission.
H&R Block is a tax return preparation and e-filing software path that pairs a guided interview with a large tax form library for common U.S. scenarios. The workflow supports importing prior-year information, handling W-2 and 1099 inputs, and moving through multi-state filing.
- +Guided interview reduces navigation friction during tax return preparation.
- +Prior-year import can shorten data re-entry for returning filers.
- +Multi-state workflows handle common state differences within one session.
- +Built-in review checks flag missing or inconsistent inputs.
- –Automation and API surface for external data flows is limited.
- –Complex business schedules need manual entry for edge cases.
- –Diagnostic review depth varies by scenario and form type.
- –Preparer workspace controls and RBAC are not a focus for teams.
Individuals needing practitioner support
Switch to assistance for unusual details
Guidance during filing
Returning filers across tax years
Start with prior-year rollover information
Faster return start
Show 2 more scenarios
Users checking pre-submission accuracy
Run worksheets and diagnostics before e-file
Omissions identified earlier
Filers review calculations and completeness using worksheets, form views, and diagnostic prompts.
Employees filing typical 1040
Complete guided wage return steps
Reviewed return for e-file
Employees complete a guided return covering wages, common deductions, and credits for reviewed electronic filing.
Best for: Fits when individual filers want guided tax return preparation with reliable imports and e-signature workflows.
Vertex
enterpriseEnterprise tax compliance software for indirect tax determination and reporting.
Practitioner workspace workflow that keeps returns in a defined readiness path for federal and state e-file submission.
Vertex is an online tax preparation and e-filing workflow tool built for practitioner-led return processing. It focuses on form-centric review tasks, client document intake, and submission readiness checks aimed at reducing filing errors during tax return preparation.
- +Structured practitioner workflow tracks return status through submission stages
- +Form guidance and error checking reduce preventable e-file problems
- +Client document intake streamlines the handoff from organizer to prep
- +Multi-state return handling supports consistent processing across filings
- –Less flexible for custom workflows than tools with deeper automation via API
- –W-2 and other import workflows may require more manual touchpoints for edge cases
- –Audit trail depth is less visible than in systems built around governance dashboards
- –Extensibility options appear limited for custom tax form libraries and mappings
Ecommerce and finance teams
Calculate sales and use tax per line
Traceable calculation details
Tax compliance and operations
Manage discrepancies with correction packages
Traceable correction path
Show 2 more scenarios
Tax preparers and accounting firms
Review business workpapers with approvals
Organized review records
Prepares can import accounting data while retaining preparer changes, approvals, review notes, and documents.
Corporate tax departments
Prepare federal and state with allocations
Repeatable multi-jurisdiction work
Departments organize federal and state steps using allocation and adjustment handling in a connected workflow.
Best for: Fits when tax teams need structured, form-led preparation workflows with status tracking for many clients.
Cash App Taxes
SMBFree federal and state tax filing integrated into the Cash App platform.
W-2 import feeds the interview directly and updates the return calculation as wage fields change.
Cash App Taxes prepares and files a U.S. federal tax return through a guided tax return preparation workflow. It supports W-2 import and standard form entry for common income and deductions, then carries the results into e-file transmission for federal returns.
- +W-2 import reduces manual wage entry and transcription errors
- +Guided interview keeps the workflow aligned to common filing decisions
- +Federal e-file transmission is handled from within the same return flow
- +Clear review screens flag missing fields before submission
- –Limited coverage for advanced business and multi-entity tax workflows
- –Practitioner controls like RBAC and audit logs are not exposed for governance
- –Prior-year import is not geared toward carry-forward complexity
- –Fewer configuration options for specialized deductions and overrides
Households claiming credits
Identify eligible deductions and credits
Relevant benefits included
Employees with W-2 income
File a standard wage return for e-file
Federal and state submission-ready
Show 2 more scenarios
Workers with under-withholding
Estimate quarterly payment needs
Clearer estimated actions
In-line prompts guide users to consider withholding and estimated quarterly payment actions.
Consumers with investment income
Include investment forms in the annual return
Investment information captured
Individuals enter supported investment-related information as part of a reviewed personal tax return.
Best for: Fits when individual filers want faster completion using document imports and a guided federal e-file flow.
TaxDome
vertical specialistPractice management and client portal software for tax and accounting firms.
Role-based workflow automation with an audit trail across client portal actions and internal processing steps.
TaxDome provides client intake, document exchange, and workflow automation for tax return preparation teams. It supports client portals and guided preparation flows that reduce back-and-forth during multi-step filing work.
- +Configurable client workflows reduce manual document chase
- +Client portal supports structured intake and controlled sharing
- +Audit trail captures user and workflow events for reviews
- +API supports provisioning and integration with external systems
- –Tax return experience depends on connected tax modules or add-ons
- –Complex authorization flows need governance to avoid access mistakes
Tax offices and tax teams
Route organizers through repeatable pipelines
More consistent coordination
Tax and advisory practices
Run advisory onboarding in client workspace
Centralized advisory process
Show 2 more scenarios
Tax and accounting teams
Assign tasks and track client progress
Fewer manual follow-ups
Teams assign work, route submissions conditionally, add internal notes, and monitor progress across client engagements.
Tax filing operations
Track corrections and void-related tasks
Clear post-submission history
Teams track recipient changes, corrections, replacements, and void-related tasks throughout the filing lifecycle.
Best for: Fits when firms need automated client intake and controlled document workflows tied to external tax processing.
UltraTax CS
enterpriseProfessional tax preparation software from Thomson Reuters for accounting firms.
Audit trail visibility across return changes supports reviewer accountability during preparation and diagnostic corrections.
UltraTax CS focuses on practitioner-led tax return preparation workflows with an integrated office environment for building and managing client returns. It supports core production tasks like W-2 and 1099 import, multi-state return preparation, and e-filing through IRS and state channels.
- +Strong tax production workflow built around return review and diagnostics
- +W-2 and 1099 import reduces manual transcription during prep
- +Multi-state return handling supports consistent work across states
- +Audit trail visibility supports internal review and change tracking
- –Workflow setup requires firm-specific configuration to match office processes
- –Many advanced capabilities depend on add-on modules and enabled options
- –Return-building screens can feel dense for occasional filers
- –Collaboration features can require disciplined roles and review sequencing
Estate tax preparers
Build Form 706 with connected schedules
Structured estate computations
Corporate tax teams
Produce C corporation workpaper packages
Traceable business return production
Show 2 more scenarios
International tax preparers
Handle nonresident returns with treaty positions
Consistent treaty handling
Firms prepare nonresident individual returns with treaty positions, withholding documentation, and related state cases.
Firms managing multi-state obligations
Coordinate federal and state preparation
Coordinated state review steps
The workflow connects federal and state preparation for individuals and entities with state-specific review points.
Best for: Fits when tax teams need production-grade preparation, diagnostics, and review controls across multiple state returns.
TaxBit
vertical specialistCryptocurrency tax compliance and reporting software for individuals and enterprises.
TaxBit’s API-driven tax data processing supports programmable intake normalization before return preparation.
TaxBit is built for teams that treat tax return preparation as a controlled data pipeline rather than a form-only workflow.
- +W-2 and 1099 import pipelines reduce manual transcription work
- +API and automation options fit teams that standardize intake to filing
- +Audit trail coverage supports review and practitioner accountability
- +Extensibility supports custom workflows beyond the built-in return wizard
- –Automation depth increases setup and integration overhead
- –Complex edge cases can require more practitioner intervention during review
Corporate tax departments
Coordinate recurring entity return production
Fewer handoffs across entities
Enterprise tax and finance teams
Determine transaction tax with evidence links
Reviewable compliance evidence
Show 2 more scenarios
Individuals with crypto activity
Prepare crypto gains and tax-form outputs
More consistent reporting
Users import cryptocurrency activity and prepare gain, loss, income, and tax-form outputs.
Tax preparers and individuals
Prepare and amend individual returns
Repeatable revision process
Workflows use imported W-2 and 1099 data with carryforwards and amended-return processing steps.
Best for: Fits when firms need repeatable tax intake-to-e-file automation across many clients with API-driven control.
Conclusion
After evaluating 10 tax online software, TaxAct stands out as our overall top pick — it scored highest across our combined criteria of features, ease of use, and value, which is why it sits at #1 in the rankings above.
Use the comparison table and detailed reviews above to validate the fit against your own requirements before committing to a tool.
How to Choose the Right Tax Online Software
Tax online software brings tax return preparation, data import, and IRS e-file transmission steps into a single guided workflow for individuals and tax teams. This buyer guide covers FreeTaxUSA, TaxAct, TaxSlayer, H&R Block, Cash App Taxes, Drake Software, UltraTax CS, Vertex, TaxDome, and TaxBit, focusing on the concrete mechanisms each product uses to reduce errors and control work in progress.
The key selection differences show up in diagnostic review behavior, how W-2 and 1099 processing is wired into the interview, and how much collaboration and governance is exposed for preparer review. Integration depth also matters, because some tools emphasize API-driven intake normalization while others route preparation through form-led steps and review routing.
Tax Online Software for return preparation, diagnostics, and e-file submission workflows
Tax online software provides a guided tax return interface, connects source documents to the return inputs, and runs pre-e-file error checks during preparation. FreeTaxUSA and TaxAct both emphasize guided interview flows paired with diagnostic review surfaces that flag inconsistencies before IRS e-file transmission.
For teams and practices, tax online software may also add workflow states for readiness and review, plus audit trail visibility tied to return changes. UltraTax CS and Vertex focus on production-style reviewer accountability and structured practitioner workspace paths through federal and state submission stages.
Diagnostic review and intake wiring criteria for Tax Online Software
Pre-e-file error checks matter because field-level inconsistencies create rejected IRS e-file transmissions and avoidable follow-up work. Diagnostic review behavior also determines how quickly a tool shows contradictions across inputs so return preparation stays inside a controlled correction loop.
Field-level diagnostic review inside preparation
FreeTaxUSA uses an interactive form preview with pre-e-file error checking that highlights issues at the field level while the return is being built. TaxAct also runs a diagnostic review flow that flags missing fields and common data mismatches before IRS e-file transmission.
W-2 and 1099 workflows tied to the interview
TaxAct automates W-2 import and 1099 processing so repetitive wage and payer data entry is reduced during interview completion. Cash App Taxes focuses on a W-2 import that feeds the interview and updates calculations as wage fields change.
Prior-year import for repeatable return cycles
TaxSlayer includes prior-year import that carries forward return data to reduce re-entry during new tax preparation cycles. H&R Block also uses prior-year import to shorten data re-entry for returning filers.
Practitioner workflow states and readiness paths
UltraTax CS exposes review workflow built around return review and diagnostics across multiple state returns. Vertex centers on a practitioner workspace workflow that tracks return status through defined federal and state submission stages.
Audit trail visibility across return changes
UltraTax CS provides audit trail visibility across return changes so reviewer accountability stays tied to preparation edits and diagnostic corrections. TaxDome adds an audit trail across client portal actions and internal processing steps to track what happened and where documents moved.
Organizer intake with traceable review routing
Drake Software uses organizer intake with preparer review routing that keeps tax adjustments traceable through amendments. FreeTaxUSA targets solo workflow speed with guided interview completion and diagnostics rather than routing complexity.
API-driven intake normalization for standardized pipelines
TaxBit focuses on API-driven tax data processing so intake normalization can be programmed before return preparation. Tools like TaxDome emphasize role-based automation for workflows and audit trail coverage rather than programmable intake normalization.
Choose by diagnostic behavior, workflow governance, and automation surface
Start by matching diagnostic review behavior to the type of error work that breaks returns for the specific filer or practice. Then pick a workflow philosophy that matches how clients and preparers move documents, review states, and e-file readiness across the team.
If errors come from inconsistent entries, prioritize field-level diagnostic surfaces
Pick FreeTaxUSA when the goal is interactive form preview plus pre-e-file error checking that points to the exact field during preparation. Choose TaxAct when the diagnostic review must highlight specific return issues like missing fields and common data mismatches before IRS e-file submission.
If data entry is the bottleneck, select tools with W-2 and 1099 wiring to the interview
Choose TaxAct for W-2 import and 1099 processing that reduces transcription during guided interview completion. Choose Cash App Taxes when wage entry speed matters most and the W-2 import updates calculations directly as wage fields change.
If repeat filing cycles dominate, use prior-year import to reduce re-keying
Choose TaxSlayer when the work is recurring and prior-year import should carry forward return data into the new filing cycle. Choose H&R Block when returning-filer speed and guided preparation are the primary drivers.
If review governance and readiness states matter, select practitioner workflow tools
Choose UltraTax CS when structured return review, diagnostics, and audit trail visibility must operate across many state returns. Choose Vertex when teams need a form-led practitioner workspace that tracks return status through submission stages.
If intake must be standardized at scale, require API-driven normalization
Choose TaxBit when repeatable intake-to-e-file automation depends on API-driven tax data processing and programmable normalization control. Choose Drake Software when production workflow and organizer intake with traceable amendment routing matter more than API-first intake control.
If external document sharing and access control drive workflow, map authorization flows to governance
Choose TaxDome when role-based workflow automation and an audit trail tied to client portal actions control intake, sharing, and internal processing. Avoid tools that only expose guided preparation with limited governance features when mis-authorization risk is a concern for the practice.
Who should buy Tax Online Software built around diagnostics, imports, and governance
Tax online software fits different operating models for individuals and practices because diagnostic review behavior and workflow controls land in different places. The strongest fit depends on whether the workflow bottleneck is data entry, error correction, reviewer accountability, or client intake authorization.
Individuals who complete returns with minimal collaboration
FreeTaxUSA matches solo workflows with interactive form preview and pre-e-file error checking that guides fixes while the return is being prepared.
Filers who want automated wage and payer inputs to reduce transcription errors
TaxAct and Cash App Taxes both focus on W-2 and 1099 automation wired into the interview so wage fields change return calculations without repetitive re-keying.
Small teams and firms that manage multiple clients through review stages
UltraTax CS and Vertex both emphasize reviewer workflow and structured readiness paths so return stages and corrections stay trackable across federal and state submission.
Practices that must enforce client portal authorization and document movement audit trails
TaxDome provides role-based workflow automation with an audit trail across portal actions and internal processing steps to control document intake and sharing.
Firms that need programmable intake normalization and standardized pipelines
TaxBit supports API-driven intake normalization so teams can standardize incoming data before preparation and keep repeatable intake-to-filing control.
Common buyer and implementation pitfalls in Tax Online Software selection
Misalignment between diagnostic behavior and workflow expectations creates avoidable rework. Governance gaps can also surface when a practice relies on approval controls that a consumer-style guided tool does not expose.
Choosing a guided interview tool for governance-heavy review work
FreeTaxUSA and Cash App Taxes prioritize guided preparation and diagnostics, which can leave practitioner workspace governance limited when approval workflows must be enforced across a team.
Underestimating how workflow setup impacts production readiness
UltraTax CS requires firm-specific configuration to match office processes, so readiness workflows should be mapped to internal return review steps before rollout.
Assuming imports handle edge cases without manual intervention
Even when W-2 and 1099 imports reduce transcription work, complex partnerships and detailed K-1 variance can still require manual adjustments, as TaxAct calls out for complex scenarios.
Skipping integration planning for API-first automation
TaxBit automation depth increases setup and integration overhead, so intake normalization requirements should be defined before building a pipeline that depends on programmable control.
Overlooking extensibility limits of workflow-driven systems
Drake Software automation is workflow-driven with limited extensibility via API compared with tools built around programmable intake, so workflows requiring deep API extensibility should be validated against actual needs.
How We Selected and Ranked These Tools
We evaluated FreeTaxUSA, TaxAct, TaxSlayer, H&R Block, Cash App Taxes, Drake Software, UltraTax CS, Vertex, TaxDome, and TaxBit on diagnostic review behavior, how W-2 and 1099 processing is wired into return preparation, and how preparation corrections stay traceable through audit trail visibility. Features received 40% weight because field-level pre-e-file error checking and workflow controls drive real correction throughput.
Ease of use and value each received 30% weight because guided interview friction and repeatable intake speed impact time-to-completion. FreeTaxUSA ranked highest because interactive form preview paired with pre-e-file error checking surfaces field-level issues during preparation and keeps individuals in a guided correction loop.
Frequently Asked Questions About Tax Online Software
How does W-2 import work differently between FreeTaxUSA, TaxSlayer, and Cash App Taxes?
Which tools provide diagnostic review checks before IRS e-file transmission?
When does prior-year import reduce re-entry work, and which products carry it forward?
What breaks if a workflow needs practitioner audit trail visibility and reviewer accountability during corrections?
How do e-signature authorization and e-file submission differ between H&R Block and TaxDome?
Which products support multi-client throughput with status tracking across federal and state readiness stages?
How do integration and API surfaces change the implementation approach in TaxDome and TaxBit?
What admin controls and access models matter if a firm must restrict actions by role?
When are practitioner workspace and organizer intake workflows a deciding factor, and which tools fit that model?
Tools reviewed
Primary sources checked during evaluation.
Referenced in the comparison table and product reviews above.
Funding and competing interests
This study was co-funded by several of the vendors assessed in it. No single vendor funded it. Funders could propose the market studied.
They had no role in selecting vendors, setting or weighting criteria, analysing data or drawing conclusions, and they received the same factual-accuracy check as every other vendor assessed.
Market definition, inclusion rules and criteria weights were fixed by an editor before research began and did not change afterwards. Editorial process →
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