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Live Data: April 2026

Cambridge, MA Sales Tax Rate 2026

The combined sales tax rate in Cambridge, Massachusetts is 6.300%.

Combined Rate 6.300%
State6.300%

Cambridge Sales Tax Breakdown

Jurisdiction Rate
Massachusetts State Sales Tax 6.300%
Total Combined Rate 6.300%

Which County Is Cambridge In?

Cambridge falls within Middlesex, Massachusetts. Middlesex imposes a 0.000% county-level sales tax in addition to the Massachusetts state base rate.

Cambridge ZIP Codes

The following ZIP codes are mapped to Cambridge for sales tax purposes. All listed codes apply the 6.300% combined rate.

02138 02139 02140 02141 02142

Business Nexus in Massachusetts

Economic Nexus Threshold

Selling into Massachusetts from out of state? Once you exceed $100,000 in annual sales or 200 transactions, you must register and collect Massachusetts sales tax.

FAQ: Cambridge Sales Tax

The combined sales tax rate in Cambridge, Massachusetts is 6.300% as of 2026.
Multiply your purchase price by 6.300% to find the tax owed. A $500 purchase would include $31.50 in sales tax.
Groceries are generally taxable in Massachusetts. Check the official Department of Revenue for specific exemptions.
Vehicle purchases in Cambridge are subject to the 6.300% combined rate, though some states apply different rules for vehicle sales. Verify with the Massachusetts Department of Revenue or DMV.
Register for a sales tax permit through the official Massachusetts Department of Revenue website. Registration is typically free and required before collecting any sales tax.

Sales Tax Calculator

Using 6.300% rate for Cambridge, MA

$
Tax Amount $0.00
Total with Tax $100.00

Rate applied: 6.300% combined

Official Tax Authority

Massachusetts Department of Revenue

Filing Deadline: Monthly returns due the 20th; quarterly returns due the 20th. File via MassTaxConnect.

Visit Official Portal (617) 887-6367