TaxPrep API
Desktop Taxprep has no API. Cloud CCH iFirm Taxprep exposes Tax and Common APIs through Wolters Kluwer's developer portal, with OpenAPI definitions and in-browser testing. Access needs a CCH iFirm firm login plus a paid annual API toolkit license.
Frequently asked questions
TaxPrep scores C on the API Report Card. Desktop Taxprep has no API. Cloud CCH iFirm Taxprep exposes Tax and Common APIs through Wolters Kluwer's developer portal, with OpenAPI definitions and in-browser testing. Access needs a CCH iFirm firm login plus a paid annual API toolkit license.
TaxPrep has an official API, but teams routinely hit its limits: gated access, partial coverage, or paid tiers. Most end up supplementing it with exports or an unofficial API layer like Supergood.
Taxprep (Wolters Kluwer / CCH) is Canada's leading professional tax-compliance software for preparing T1/TP1, T2 (corporate), and T3 returns. It ships as on-premise desktop products (Personal/Corporate Taxprep) and as cloud-based CCH iFirm Taxprep, used by accounting firms and corporations.
Accounting / Tax, Typically for Canadian accounting firms (from the largest national firms to small practitioners) and corporate tax departments. Preparers assemble and file T1/T2/T3 returns, manage return status and workflow, and (in iFirm) integrate with CCH iFirm Portal, Digital Signature, Tracking, and Documents.
Relied on by every one of the top Canadian accounting firms plus thousands of local firms and corporations; the de facto standard for Canadian professional tax compliance.
Yes, Client tax returns, financial data, and filing workflow are highly critical system-of-record data for accounting firms.
Long-established CCH/Wolters Kluwer product (decades old); modernized via cloud CCH iFirm Taxprep, but the core desktop products remain on-prem.
API access gated behind a paid annual toolkit license. API key tied to firm account; setup requires WK guidance. Full sourced list under Sources below.
Common alternatives include TaxCycle (Xero), ProFile (Intuit), DT Max (Thomson Reuters), Cantax, UFile Pro. Graded alternatives appear under "More from the report card" below.
Grades measure one thing: can a customer's engineering team get their own data out programmatically? We check six things (whether a real API exists, how access is gated, data coverage, auth quality, docs and developer experience, and stability) and roll them into a letter grade. Grades get re-verified, and they only move on evidence.
Yes. Supergood maintains an unofficial TaxPrep API and MCP server so AI agents and internal tools can read and write TaxPrep data. See the TaxPrep integration docs at supergood.ai/docs/taxprep-api.