Stamp duty calculator

Calculate the stamp duty payable on a contract by value and number of counterparts.

All tools

Contract value *

Total value excluding VAT; for open-ended contracts use the annual value.

Number of counterparts

Each counterpart is separately taxed; signing a single original reduces the duty.

Is one party a public authority?

No Yes

In contracts with public authorities the duty is generally borne by the private party.

These tools are for information only and do not constitute legal advice. Results are based on current statutory rates and the data you enter; the specifics of your case may lead to a different outcome.