Stamford, Connecticut Cannabis Tax Rate
20.1% totalAdministering agencies: Connecticut Department of Revenue Services + Stamford Finance Department · Updated for 2026
A legal cannabis purchase in Stamford is taxed at a combined effective rate of about 20.1%, driven by a 3% Stamford cannabis business tax stacked on top of Connecticut's 10.75% state excise and 6.35% state sales tax. Every major Connecticut city tracked here carries the same combined rate, because Connecticut applies a uniform 3% local cannabis tax across host communities. On a typical $100.00 dispensary purchase that works out to roughly $20.10 in tax, or about $120.10 out the door.
How Much Is Cannabis Tax in Stamford?
Use these worked examples to see what Stamford's 20.1% combined cannabis tax adds to a dispensary purchase. Figures apply the Connecticut state excise, 6.35% state sales tax, and the 3% Stamford cannabis business tax to the pre-tax price.
| Pre-tax price | Total tax | Stamford city tax | You pay |
|---|---|---|---|
| $50.00 | $10.05 | $1.50 | $60.05 |
| $100.00 | $20.10 | $3.00 | $120.10 |
| $200.00 | $40.20 | $6.00 | $240.20 |
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 Stamford tax calculator.
Stamford Cannabis Tax Breakdown
| Tax | Rate | Notes |
|---|---|---|
| Connecticut Cannabis Excise | 10.75% | State-imposed retail excise |
| Connecticut State Sales Tax | 6.35% | Medical cannabis exempt |
| Typical Local Sales Tax | 0% | County / district average |
| Stamford Cannabis Business Tax | 3% | City-specific cannabis ordinance |
| Combined Effective Rate | 20.1% | What you actually pay at retail |
Official source: Connecticut Department of Revenue Services ↗ · rates compiled 2026-08-11 · city rates set by local ordinance.
How Medical Cannabis Is Taxed in Stamford
Qualifying registered medical patients are exempt from the 10.75% state cannabis excise and the 6.35% state sales tax. In practice that trims roughly $17.10 off every $100.00 spent versus an adult-use purchase in Stamford, though the 3% Stamford cannabis business tax may still apply depending on the local ordinance.
Why Is Cannabis Taxed This Much in Stamford?
Cannabis in Stamford carries layers of tax that ordinary retail goods never see. Connecticut adds its 10.75% cannabis excise on top of ordinary sales tax, and Stamford 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 Stamford dispensary can run noticeably higher than the same product in a lower-tax Connecticut city or across the state line.
Connecticut is replacing its THC-potency tax (0.625¢/mg on flower, 0.9¢/mg on edibles, 2.75¢/mg on other products — roughly 10–15% of retail) with a flat 10.75% excise on gross receipts effective October 1, 2026, under a 2026 law. Combined with 6.35% state sales + 3% municipal tax, the effective rate runs ~20–26% under either structure. Medical cannabis is exempt.
Stamford vs Other Connecticut Cities
Connecticut keeps local cannabis taxes uniform, so the combined rate in Stamford 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 |
|---|---|---|
| Hartford | 3% | 20.1% |
| New Haven | 3% | 20.1% |
| Bridgeport | 3% | 20.1% |
| Stamford (this page) | 3% | 20.1% |
See the full Connecticut cannabis tax guide →
Frequently Asked Questions
What is the cannabis tax rate in Stamford, Connecticut?
How much tax will I pay on a $100 cannabis purchase in Stamford?
How much is the cannabis business tax in Stamford?
Are medical cannabis patients exempt from Stamford's tax?
Where can I buy cannabis in Stamford?
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