APR Calculator
True annual cost of borrowing. Enter your figures below for an instant, free estimate — this page is a working preview ahead of full guide content.
APR Calculator estimates true annual cost of borrowing. It's one of the 45 UK tax and finance calculators built into ac-co, covering everything from Self Assessment and payroll to landlord tax and company structuring.
The figures below run entirely in your browser against the current published HMRC rates and thresholds for the tax year you select — nothing is sent to a server, and no sign-up is required to see an estimate.
For a calculation that accounts for your full tax position — every income source, relief and allowance together, not just this one figure in isolation — file with ac-co directly.