What is the sales tax in Newmarket city? - The sales tax in Newmarket city of New Hampshire is 0% as of 2025. Use the Newmarket sales tax calculator to calculate the sales tax for any purchase in Newmarket.
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Below is a list of the state sales tax, city sales tax, and county tax rate for Newmarket.
| County | State | City | Zip Code | State Tax | City Tax | County Tax | Total Tax |
|---|---|---|---|---|---|---|---|
| Rockingham | New Hampshire | Newmarket | 03857 | 0% | 0% | 0% | 0% |