New Hampshire Sales Tax Calculator for Construction Materials
New Hampshire has no general sales tax. However, contractors purchasing materials for use in construction projects are considered the end consumer and pay no sales tax on materials purchased within NH. This calculator helps contractors understand their tax liability when purchasing materials in NH versus other states, and estimates potential use tax exposure.
Formula
Sales Tax at Purchase = Material Cost × Purchase State Tax Rate
NH Use Tax = $0.00 (New Hampshire imposes no use tax — RSA Title V)
Net Tax Liability = max(0, Sales Tax at Purchase − Tax Already Paid to Vendor)
Total Contractor Cost = Material Cost + Net Tax Liability
NH Purchasing Savings = (Other State Tax Rate × Material Cost) − $0 NH Tax
Example: $50,000 in materials purchased in NH → $0 sales tax, $0 use tax, total cost = $50,000.
Same materials purchased in MA → $50,000 × 6.25% = $3,125 in sales tax, total cost = $53,125.
Assumptions & References
- No NH Sales Tax: New Hampshire does not impose a general sales and use tax. RSA Title V (Taxation) and NH DRA guidance confirm contractors purchasing materials in NH pay no sales tax.
- Contractor as End Consumer: In NH, contractors who incorporate materials into real property are treated as the end consumer. The contractor owes no sales tax on materials purchased in NH for NH projects.
- No NH Use Tax: Unlike most states, New Hampshire has no use tax. Materials purchased tax-free in NH and used in NH projects incur zero additional tax liability.
- Out-of-State Purchases: If a contractor purchases materials in a state with a sales tax (e.g., MA, VT, ME), that state's sales tax applies at the point of sale.
- Out-of-State Projects: If construction occurs outside NH, the destination state's use tax rules apply. Many states have contractor exemptions or resale certificates — consult a tax professional.
- Tax Rates Used: MA 6.25% (MGL Ch. 64H), VT 6% (32 VSA § 9771), ME 5.5% (36 MRSA § 1811), CT 6.35% (CGS § 12-408), NY ~8.5% (state 4% + average local 4.5%).
- Material Categories: All standard construction material categories are treated uniformly under NH's no-sales-tax policy. No special exemptions or reduced rates apply within NH.
- This calculator is for estimation purposes only. Consult the NH Department of Revenue Administration (nhrevenue.nh.gov) or a licensed tax professional for project-specific guidance.