SaaS Sales Tax by State 2026 — Taxable vs Exempt Calculator

SaaS sales tax by state 2026 varies by state and by use case. About 22 states tax SaaS to consumers (B2C); fewer tax SaaS to businesses (B2B), and several states exempt B2B with a valid resale or research-and-development certificate. California, Massachusetts, and most non-sales-tax states exempt SaaS entirely.

Which States Tax SaaS in 2026

Always taxable (B2B and B2C): Arizona, Connecticut, Hawaii (GET), Maryland (Digital Products Tax), Mississippi, New Mexico (GRT), New York, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas (80% taxable as Data Processing Service), Utah, Washington, West Virginia, DC. B2C only (B2B exempt): Iowa, Ohio (Ohio exempts B2B with a Direct Pay permit). Exempt entirely: California, Massachusetts, Florida, Illinois state-wide (Chicago has a 9% Personal Property Lease Transaction Tax that hits cloud software), Indiana, Michigan, Minnesota, New Jersey, North Carolina, Oklahoma, Virginia, Wisconsin, and most others. Texas is a special case — only 80% of the SaaS price is taxable (the other 20% is treated as a non-taxable use of computing services).

B2B Exemption Certificates and What They Cover

For B2B SaaS in taxable states, you can often avoid charging tax by collecting a valid resale certificate (buyer resells SaaS in its own product), R&D certificate (PA, NY), nonprofit 501(c)(3) exemption, or government / educational institution exemption. Connecticut uniquely caps B2B SaaS at a 1% reduced rate (instead of 6.35%) when the buyer is in the same line of business. Keep certificates on file — auditors will demand them. Avalara, TaxJar, and Stripe Tax all have exemption-certificate management built in.

Estimating Your SaaS Sales Tax Liability

If you sell to all 50 states, expect roughly 2-4% of MRR in state sales tax obligation when not exempted — much of that hits California, Texas, New York, Washington, and Pennsylvania (the top 5 states by SaaS spending). A $1M ARR SaaS with a typical US enterprise mix sees about $25K-$40K of annual state tax obligation before exemptions. Tax-collecting US states have economic nexus thresholds — usually $100K or 200 transactions — that trigger your duty to register. Once registered, charge the destination rate at checkout, file monthly/quarterly returns, and remit.

Common SaaS Sales Tax Mistakes

(1) Assuming all states exempt SaaS — 22 states tax it as of 2026. (2) Confusing SaaS with downloaded software — most states tax downloaded software but exempt SaaS (the software stays on the vendor's server). The downloaded-vs-SaaS distinction matters in CA, IL, OH, and others. (3) Missing the Texas 80/20 rule — Texas only taxes 80% of the SaaS price as Data Processing Service. (4) Forgetting the Chicago lease tax — Chicago's 9% Personal Property Lease Transaction Tax catches cloud software even though Illinois state-wide exempts SaaS. (5) Not collecting B2B exemption certificates — in audit, you owe the tax if you can't produce a valid cert.

Last updated May 2026. Sources: individual state Department of Revenue rulings and letter rulings, Texas Comptroller Rule 3.330 (Data Processing Services), Chicago Department of Finance Personal Property Lease Transaction Tax Ruling 12, Pennsylvania Sales and Use Tax Bulletin 2010-01.