HMRC calculators and tools

HM Revenue and Customs (HMRC) calculators and tools to help you work out your tax.

Income Tax

Tool What it does
HMRC tax checker Check you’re paying the right amount of Income Tax
HMRC tax calculator Estimate how much Income Tax and National Insurance you’ll need to pay this year

National Insurance

Tool What it does
National Insurance refund Apply for a refund on your National Insurance contributions (NIC)
Director’s National Insurance contributions calculator Check a company director’s National Insurance contributions
National Insurance contributions calculator Calculate your employee’s National Insurance contributions
PAYE/NIC current year reference checker PAYE/NIC current year reference checker
Class 1A NIC reference checker Class 1A NIC reference checker

Self employed

Tool What it does
Self-employed ready reckoner A tool to help you budget for your first Self Assessment tax bill if you’re self-employed

Self Assessment

Tool What it does
Lloyd’s calculator Work out adjustments under section 107 Finance Act 2000 when filing your Self Assessment tax return


Tool What it does
Calculate your leave and pay when you have a child Find out if you can get maternity, paternity or shared parental leave - for employees
PAYE payroll calculator Check your payroll calculations
National Insurance payroll calculator Check your National Insurance payroll calculations
Basic PAYE tools Tools to help you run your payroll
PAYE CHAPS Request form for PAYE CHAPS transfer
Company car calculator Calculate the company car tax charge based on a car’s taxable value and CO2 rating
Statutory sick pay calculator Work out your employee’s statutory sick pay
Maternity and paternity calculator Work out your employee’s maternity or paternity pay and leave
PAYE Desktop Viewer View your employee tax codes and notices
Stop PAYE payment booklet form Stop receiving a PAYE payment booklet
Order P45s and P60s Get P45s and P60s for your employees if you can’t produce these using your payroll software
PAYE/NIC current year reference checker PAYE/NIC current year reference checker

Employment status

Tool What it does
Employment Status Indicator Check your employment status

Stamp Duty Land Tax (SDLT)

Tool What it does
SDLT calculator Work out how much SDLT you need to pay when buying or transferring land or property
SDLT CHAPS request Request to pay SDLT by CHAPS


Tool What it does
Guaranteed Minimum Pension (GMP) checker Use this service to request GMP calculations
Pension savings annual allowance calculators Work out if you can top up your annual tax-free pension allowance
Pension schemes annual allowance checking tool Check if you need to pay a tax charge on your pension savings
Pension schemes lifetime allowance checking tool Check if you should apply for lifetime allowance protection on your pension
Pension input amount calculator Pension input amount calculator

Child Benefit and Child Trust Fund

Tool What it does
Child Benefit tax calculator Check if you need to pay the High Income Child Benefit Tax Charge
Child Trust Fund locator Work out where your Child Trust Fund is held

Tax credits

Tool What it does
Childcare vouchers: better off calculator Find out how childcare vouchers from your employer affect your tax credits
Tax credits questionnaire Find out if you qualify for tax credits
Tax credits calculator Estimate of how much in tax credits you could get in total
Tax credits: working out your childcare costs tool Calculate your childcare costs for claiming tax credits


Tool What it does
VAT payment deadline calculator Work out the VAT payment deadline for your accounting period
EU VAT number validation Check a VAT number from any EU country to help you complete a EC Sales List (ESL)
VAT CHAPS request Request to pay VAT by CHAPS

Corporation Tax

Tool What it does
No Corporation Tax due Tell HMRC you have no Corporation Tax due
Corporation Tax via CHAPS (Cumbernauld) Request to pay Corporation Tax by CHAPS to HMRC Cumbernauld
Corporation Tax via CHAPS (Shipley) Request to pay Corporation Tax by CHAPS to HMRC Shipley

Inheritance Tax and bereavement

Tool What it does
Bereavement guide Find out what to do when dealing with HMRC after someone dies
Inheritance Tax interest calculator Calculate how much interest is due on a payment of Inheritance Tax
Inheritance Tax reduced rate calculator See if you qualify to pay a reduced rate of Inheritance Tax
Inheritance Tax: grossing up calculators Work out an estate value when legacies in a will are free of tax and other assets are tax exempt
Inheritance Tax: guaranteed annuity calculator Work out an estimated market value of guaranteed annuity payments when valuing assets of the deceased’s estate
Inheritance Tax: quarters calculator for trusts Work out the number of quarters (three month periods) when Inheritance Tax is charged on a trust for certain chargeable events


Tool What it does
Tax residence indicator Check your residence status for Income Tax and Capital Gains Tax

Import and export

Tool What it does
System for the Exchange of Excise Data (SEED) Check whether your SEED Excise ID is valid
UK Trade Tariff tool Classify your goods for import or export using the UK Trade Tariff, based on the EU TARIC (Tariff Integre Communautaire)
UK Integrated Tariff All 3 volumes of the Tariff, which sets out the duties and measures that affect imports, exports and goods in transit


Tool What it does
Tax pool calculator Work out a discretionary trust’s available tax pool

IR35: working through an intermediary

Tool What it does
Deemed payment spreadsheet Help you calculate a deemed employment payment

Gambling duties

Tool What it does
Machine Games Duty registered business Search business by postcode

Certificates of tax deposit

Tool What it does
Certificate of Tax Deposit interest calculator Check the level of interest due against a tax deposit you have already made under the Certificate of Tax Deposit scheme