We take an active interest in calculators as tools to save people time and to help them to be self-sufficient.

It is important that calculators give the right answers. Not always easy to do as the subjects are sometimes very complex and designers of calculators leave out difficult things on occasion.

We have not reviewed the calculators in detail, but from what we know, they are among the best in their fields on the internet at the moment. As we said above, this does not guarantee complete accuracy, nor do we necessarily endorse any other information/advice contained on these sites.

Income tax and pay

What am I paid?

This calculator works out how much you are paid daily/weekly/monthly/annually from your hourly rate.

Payslip checker

This calculator checks that the right amount of tax and national insurance is being deducted from your wages/salary/pension for the code number that is shown on your payslip.

Salary checker

A survey tool which checks your pay against the pay of others doing the same job.

Minimum wage calculator

This calculator checks whether you are being paid the national minimum wage for your occupation.

Statutory redundancy pay calculator

This calculator will give you the value of your statutory redundancy pay if you are facing redundancy or have been made redundant.

Company car and fuel benefit calculator

An HMRC calculator which calculates the tax benefits which arise from the provision of a company car and fuel.

Tax checker

An HMRC calculator to help you decide if you have overpaid tax during a tax year.

Value added tax

VAT calculator

This calculator helps you to check that the right amount of VAT is being charged on goods and services.

Tax credits

Entitlement to tax credits

A short eligibility calculator from HMRC which enables someone to see if they are likely to qualify to receive tax credits.

Tax credits calculator

A more complex calculator which shows you the amount you might expect to receive if you made a tax credit claim. Unusually it does not show you the amount for the whole of a year, but only from when you put in the information until the end of the tax year. It cannot calculate rates for future years.

Childcare voucher “better off” calculator

Another calculator from HMRC. Although this may not give a completely accurate answer, in most cases it will give you some indication as to whether you would be better off taking childcare vouchers or not.

Two of the calculators in the next section also contain tax credits calculations.

Other benefits

State pension age calculator

This calculator tells you when you can expect to receive your State pension. You can also use it to check your Pension Credit qualifying age and when you will be eligible for free bus pass travel. 

Benefits checker

This calculator from Entitledto covers the main benefits to which people on low incomes may be entitled.

General financial


A calculator to help you plan for your retirement.

Money Advice Service

The Money Advice Service provides a number of useful planners and calculators which cover a variety of topics including budget planning.

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HMRC calculators and tools

HMRC provide a number of calculators and tools to assist people with working out their tax (we have included some in the sections above). Many of these can be found by going to HMRC’s calculator page on GOV.UK.

If you have missed a deadline for self assessment, for example, for sending in your tax return or paying your tax, HMRC charge you penalties and interest. There is an HMRC calculator on GOV.UK, which can estimate your penalty for the current tax year.

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