Top 10 Best Sales Tax Recovery Services of 2026

EY’s recovery work centers on structured audit support and refund readiness, including sales tax audit review workflows that produce traceable support for overpayment identification. Recovery projects typically combine transaction-level invoice review with accounts payable and general ledger reconciliation so auditors can follow the audit trail from source data to claim positions. The organization’s main fit signal is formal project governance that keeps technical positions aligned with documentation expectations.

A clear tradeoff is that the engagement effort often requires strong client-side data access and timely validation of source documents before claims can be finalized. EY is best suited when the scope includes multi-jurisdiction complexity or a reverse audit where technical positions and evidence packages must be consistent across taxing authorities. Organizations with clean invoice-to-GL mapping usually accelerate document preparation, while fragmented sourcing can slow turnaround.

KPMG’s engagement style fits organizations that need recovery work tied to audit support, including sales tax audit review and documentation built to withstand jurisdiction-specific scrutiny. The firm’s work is oriented around tax reasoning and evidence organization, which helps when exemption certificate validation and taxability determination require traceable support. This provider is usually a better fit for teams with internal tax leadership and clear pathways to extract purchase-to-pay and general ledger detail for transaction-level analysis.

A key tradeoff is that KPMG’s process tends to be document and advisory heavy, so teams looking for highly automated self-service workflows often find less operational throughput. KPMG is most useful when recovery claims depend on exemption validation decisions, when a reverse audit plan must be aligned to anticipated audit questions, or when voluntary disclosure assessment is on the table.

Grant Thornton’s delivery usually emphasizes audit trail documentation and audit-support workflows that connect transaction review to refund claim preparation and tax authority correspondence. The engagement shape fits organizations that can supply purchase-to-pay data and supporting records, then want the team to reconcile findings into a defensible narrative for review. For sales tax recovery, this orientation matters most when the refund request must survive scrutiny across jurisdictions and supporting evidence must map cleanly to the transactions reviewed.

A key tradeoff is that governance expectations can be higher than for lighter-weight recovery providers, because the team typically needs consistent source records for transaction-level support. Grant Thornton fits situations where audit review, reverse audit preparation, and exemption certificate validation drive the recovery outcome more than quick sampling alone. Examples include refund claims tied to complex sourcing rules, ship-to and bill-to analysis, or use tax accrual review where documentation completeness drives timing and acceptance.

Deloitte brings a sales tax recovery service model grounded in audit support and large-firm tax operations experience. Core work typically centers on overpayment identification through transaction-level invoice review and purchase-to-pay extraction plus reconciliation to account records.

PwC performs sales tax recovery services that pair audit support with transaction review and refund claim preparation across multiple jurisdictions. The delivery model typically relies on tax professionals to interpret exemption certificates, evaluate taxability decisions, and assemble audit trail documentation that tax authorities expect.

Plante Moran fits organizations that need sales tax recovery work handled with audit-ready rigor, not just analysis.

BDO USA couples sales tax recovery execution with audit-facing support through its tax consulting delivery model and structured review of transaction activity. Teams get invoice-level and process-level analysis aimed at identifying overpayments, supporting exemption positions, and organizing evidence for reverse audit or audit response work.

RSM US brings sales tax recovery services together with audit support and transaction-level review workflows that focus on overpayment identification across multi-state activity. The firm is strong at building refund claim preparation packages with audit trail documentation that ties source documents to claim positions.

Crowe supports sales and use tax recovery work by combining audit support with reverse audit style transaction reviews and refund claim preparation workflows. The offering is built around cross-functional tax and accounting execution, including purchase-to-pay data extraction into a reviewable evidence trail for tax authority correspondence.

CBIZ delivers sales and use tax recovery support that centers on audit support and refund-claim work, with a focus on transaction-level invoice review and reconciliation to the underlying accounting records. The offering is geared toward teams that need structured exception handling, including exemption certificate validation and documentation for tax authority correspondence.