Yes.

For example: you works as a restaurant waiter in the morning and drive an Uber in the evenings. You will have to file a tax return for your Uber income.

Read more about being both employed and self-employed here.

The documents we require depend on why you need to do a Self Assessment.

If your only reason to file one is because you’ve gone over the £150,000 earnings threshold, and your only source of income is employment (PAYE), then we only need a P60 (sometimes a P45 as well), and any P11D forms you might have received from your employer.

However, if you already have an HMRC Online Services account, we can simply connect to it and simply pull your information from there. And, in case you’re wondering, we’re authorised by HMRC to do this.

For any other reasons to do a Self Assessment, we have a longer list of documents here.

No.

You only pay National Insurance for your:

• employment income and
• self-employment income

For anything else, like dividends, savings interest, foreign income, etc., you don’t need to pay National Insurance, only Income Tax.

Of course, if you wish to qualify for or increase your State Pension, you can always make voluntary National Insurance contributions.

It really depends.

Basically, the Real Time CGT return asks you to estimate how much your income will be for the year. If nothing significant changes and you don’t go over/under £50,000 a year (there are different CGT rates if you earn less or more than this), then you don’t need to do a Self Assessment.

However, if you lose a job or get a significant promotion, you might need to file a Self Assessment as well – by January 31st of the second year.

Don’t worry. The most important thing to do is speak to HMRC as soon as you can.

Find out if you owe any penalties with our late penalties calculator.

Two ways:

• online or by phone: but only for the £100 late filing penalty.
• print and send the SA370 form via post

In either case, you’ll need to provide a “reasonable excuse”.

You must appeal within 30 days unless you have a serious reason for appealing late.

There are many tax-free allowances in the UK:

• everyone in the UK is entitled to £12,500 tax-free income – this is called the Personal Allowance
• if you made any capital gains (sold shares, property, etc.), the first £12,000 is tax-free
• first £2,000 from dividends is also tax-free
• same with the first £5,000 from savings interest (although it can be less – it depends on your tax band)

There are also a few tax-free allowances you can claim instead of expenses:

• you can claim £7,500 if you rent out a room from your own home
• you can also claim £1,000 if you are self-employed or a landlord
• if you earn under these amounts you don’t even need to declare them

You can see a full list of tax-free allowances here

Your UTR number is a Unique Taxpayer Reference that you get when you register for Self Assessment.

It consists of 10 digits (sometimes with a letter K at the end) and is issued to you by HMRC.

Check out our guide to getting a UTR.