Self Assessment guides

Get your Self Assessment checklist

Download your guide to completing every step of your Self Assessment tax return with ease. Simply follow the checklist from registration through to filing and take the stress out of this year’s return.

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Guides to help you breeze through your Self Assessment tax return

Not sure where to start with your tax return? In the middle of a post-deadline panic? Whatever your Self Assessment query, we can help! Simply browse through the list below to find the right guide for you.

Preparing to file

Completing the return

Filing Self Assessment online with HMRC

How long will it take for my tax bill payment to reach HMRC?

There a number of different ways to pay your tax bill and each method takes a different amount of time to process before your payment can reach HMRC. To help you plan to pay your tax bill on time, here’s a breakdown of how long it will take for your payment to reach HMRC through each of the methods available

After the deadline

Important dates

Online tax return deadline

Midnight, 31st Jan 2021

Tax year to file for

6th April 2019 to 5th April 2020

Final payment of any tax due

HMRC has announced that Self Assessment taxpayers who did not meet the payment deadline of 31st January will not be charged a 5% late-payment penalty if they pay their tax or set up a payment plan by 1st April 2021.

Penalty for late filing

HMRC will only issue late filing penalties for 2019/20 Self Assessment tax returns that are submitted after 28th February 2021.