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RJM Tax Exemption review

#6 of 25 in Sales Tax Software

A human-led US sales tax compliance service — registration, filing and exemption reviews handled by consultants, not software you configure yourself.

8.7/10Editor score
Visit RJM Tax Exemption
RJM Tax Exemption8.7 Visit RJM Tax Exemption

Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026

RJM Tax Exemption (Mattinson Consultancy Ltd.) is a specialist US sales tax compliance service for ecommerce and online sellers, run by human consultants rather than automated software. It covers registration across all 50 states, ongoing monthly filing, nexus tracking, exemption reviews, and Voluntary Disclosure Agreements for resolving historic tax liability, with platform support for Amazon, Shopify, eBay, Etsy, Walmart, WooCommerce, BigCommerce, Adobe Commerce, Magento, QuickBooks and Sage. Plans start from $40/month with no lock-in, a free initial tax liability assessment (48-business-hour response), a free first month of filing (up to $1,000 in value), and a price-match guarantee against competitors. The company reports over 5,000 customers since 2019 and a 4.9 Trustpilot rating from 500+ reviews. Unlike the automated tax engines elsewhere on this list, RJM has no self-service API or real-time calculation — its value is a consultant doing the work for you, which suits sellers who'd rather not run tax software themselves.

RJM Tax Exemption pros and cons

  • Where it wins
    • A dedicated human consultant handles registration and filing, not just software
    • Takes on Voluntary Disclosure Agreements for existing back-tax problems
    • Free first month of filing (up to $1,000) plus a price-match guarantee
    • 4.9 Trustpilot rating from 500+ reviews
    • Registration and filing coverage across all 50 states
  • Where it doesn't
    • No self-service API or real-time tax calculation — not a drop-in replacement for an Avalara/TaxJar-style integration
    • No professional certifications (CPA/EA) listed for its consultants
    • Less suited to sellers who want to automate tax inside their own stack

RJM Tax Exemption fact sheet, pricing and score →

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