About Invoici

Free, simple tools to help UK small businesses get paid.

Late payment is one of the biggest headaches for small businesses and freelancers. The law gives you the right to charge interest and compensation when another business pays you late, but working out the figures, and knowing which rate applies, takes longer than it should.

Invoici does that part for you. Enter the invoice details, see exactly what you can claim, and copy a chasing letter with the numbers already filled in.

Free to use

Every tool on Invoici is free, with no sign-up. The site is supported by advertising. Nothing you type into the calculator is sent to us or stored: the sums are done in your own browser.

Keeping it accurate

Statutory interest is linked to the Bank of England base rate, which is fixed twice a year for late payment purposes, on 31 December and 30 June. We update our rates after each of those dates. If you spot something that looks wrong, please let us know.

Important

Invoici provides general information only. It isn't legal, tax or financial advice, and we aren't solicitors or accountants. Please check the figures before relying on them, and speak to a professional if your situation is complicated or the amount is significant.