Boston, Massachusetts Cannabis Tax Rate
20% totalAdministering agencies: Massachusetts Department of Revenue + Boston Finance Department · Updated for 2026
A legal cannabis purchase in Boston is taxed at a combined effective rate of about 20%, driven by a 3% Boston cannabis business tax stacked on top of Massachusetts's 10.75% state excise and 6.25% state sales tax. Every major Massachusetts city tracked here carries the same combined rate, because Massachusetts applies a uniform 3% local cannabis tax across host communities. On a typical $100.00 dispensary purchase that works out to roughly $20.00 in tax, or about $120.00 out the door.
Boston is Massachusetts’s capital and largest city and applies the 3% local-option tax the state allows on adult-use cannabis.
How Much Is Cannabis Tax in Boston?
Use these worked examples to see what Boston's 20% combined cannabis tax adds to a dispensary purchase. Figures apply the Massachusetts state excise, 6.25% state sales tax, and the 3% Boston cannabis business tax to the pre-tax price.
| Pre-tax price | Total tax | Boston city tax | You pay |
|---|---|---|---|
| $50.00 | $10.00 | $1.50 | $60.00 |
| $100.00 | $20.00 | $3.00 | $120.00 |
| $200.00 | $40.00 | $6.00 | $240.00 |
Estimates treat all taxes as applied to the retail price; actual receipts vary by product, potency tax (where applicable), and exact local sales rate. Model a specific basket with the Boston tax calculator.
Boston Cannabis Tax Breakdown
| Tax | Rate | Notes |
|---|---|---|
| Massachusetts Cannabis Excise | 10.75% | State-imposed retail excise |
| Massachusetts State Sales Tax | 6.25% | Medical cannabis exempt |
| Typical Local Sales Tax | 0% | County / district average |
| Boston Cannabis Business Tax | 3% | City-specific cannabis ordinance |
| Combined Effective Rate | 20% | What you actually pay at retail |
Official source: Massachusetts Department of Revenue ↗ · rates compiled 2026-08-11 · city rates set by local ordinance.
How Medical Cannabis Is Taxed in Boston
Qualifying registered medical patients are exempt from the 10.75% state cannabis excise and the 6.25% state sales tax. In practice that trims roughly $17.00 off every $100.00 spent versus an adult-use purchase in Boston, though the 3% Boston cannabis business tax may still apply depending on the local ordinance.
Why Is Cannabis Taxed This Much in Boston?
Cannabis in Boston carries layers of tax that ordinary retail goods never see. Massachusetts adds its 10.75% cannabis excise on top of ordinary sales tax, and Boston then collects an additional 3% cannabis business tax on licensed retailers — a cost dispensaries pass through to the customer. That stacking is why the register total at a Boston dispensary can run noticeably higher than the same product in a lower-tax Massachusetts city or across the state line.
10.75% state cannabis excise + 6.25% state sales tax + up to 3% local option tax. Medical marijuana is exempt from all three.
Boston vs Other Massachusetts Cities
Massachusetts keeps local cannabis taxes uniform, so the combined rate in Boston matches the other major cities below — the main cost difference between them comes down to base dispensary pricing, not tax.
| City | City Cannabis Tax | Combined Effective Rate |
|---|---|---|
| Boston (this page) | 3% | 20% |
| Worcester | 3% | 20% |
| Springfield | 3% | 20% |
| Cambridge | 3% | 20% |
| Lowell | 3% | 20% |
See the full Massachusetts cannabis tax guide →
Frequently Asked Questions
What is the cannabis tax rate in Boston, Massachusetts?
How much tax will I pay on a $100 cannabis purchase in Boston?
How much is the cannabis business tax in Boston?
Are medical cannabis patients exempt from Boston's tax?
Where can I buy cannabis in Boston?
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