Self Assessment and tax resource

What is payment on account?

Payment on account is one of the most commonly misunderstood parts of the Self Assessment process. Read more about the 31 July deadline.

A guide to self-employed expenses

The self-employed can reduce their taxable income by deducting certain expenses. Find out what self-employed tax-deductible expenses you can claim.

A guide to self-employed tax rates

You need to declare your self-employed income when filling in your Self Assessment tax return, but there are different tax rates depending on how much you earn.

Our guide to self-employed tax rates explains everything you need to know.

What are simplified expenses?

Some self-employed people with straightforward tax affairs can use the HMRC simplified expenses scheme, which lets you work out allowable business expenses based on standard flat rates set by HMRC.

Read about simplified expenses.

When is the Self Assessment deadline?

Need to know when to pay your tax bill? Check the key Self Assessment deadlines, as well as other important tax year dates.

How to use HMRC's Time to Pay service

Struggling to pay your tax bill before 31 January? If so, you may be able to pay in instalments using HMRC's Time to Pay service.

Step-by-step guide to Self Assessment tax returns for landlords

If you make money from renting out your properties, you need to complete a tax return. Here’s how the Self Assessment process works for landlords.

What are acceptable reasons for a late tax return?

When might you end up with a penalty from HMRC? And what excuses might HMRC accept when appealing? Check our list of HMRC penalty appeals and reasonable excuses.