Calculators

Free UK tax calculators, designed to give you a quick estimate before you sign up for the full Tax Optimiser dashboard.

Corporation Tax

Estimate Corporation Tax for a UK limited company with marginal relief.

VAT

Add VAT to a net amount or remove it from a gross amount, at 20%, 5% or any rate.

VAT Flat Rate Scheme

Compare the Flat Rate Scheme with standard VAT, with the limited cost trader test.

Salary vs Dividend

Compare the standard director salary levels and see which leaves the most take-home pay.

Dividend Tax

Income tax on dividends on top of your salary, band by band.

Sole Trader vs Limited Company

Compare tax and take-home on the same profit as a sole trader and as a company.

Director's Loan (S455)

Section 455 tax on an overdrawn director's loan, with due and refund dates.

Corporation Tax Deadlines

Payment, CT600 and Companies House dates for any accounting period.

Capital Allowances

Full expensing, AIA and car allowances on what your company has bought.

Loss Carry-Back

Repayment from carrying a trading loss back, compared with carrying it forward.

MTD for Income Tax Checker

Check when Making Tax Digital for Income Tax applies to you, and your deadlines.

Take-Home Pay

What is left of your salary after tax, National Insurance, pension and student loans.

Company Accounts Type Checker

Micro-entity, small or dormant accounts, and whether the free Companies House service is still open.

Late Filing Penalty

Companies House and HMRC penalties for late accounts and a late CT600.

CT600 Filing Checker

Whether a dormant, never-traded or new company has to file a CT600.

Filing Cost

The cheapest credit packs and the cost per client for an accountancy firm.