Know your Key Dates
There are a few key dates to keep in mind for submitting personal tax returns.
Tax year 2019-20 runs from 6 April 2019 to 5 April 2020
Cut-off if you want to have HMRC collect tax due via PAYE or your pension – 30 December 2019.
Tax return submission deadline (online) – 31 January 2020 at midnight. You’ll need to ensure you’re registered for self-assessment and have your Government Gateway or other login to hand well ahead of this. It can take several weeks for login details to come through – so if you’re not sure you may want to request a reminder soon.
Deadline for paying tax due – 31 January 2020. However, don’t delay submitting a return just because you can’t pay the tax! File it, and then pay … you may have to pay some interest, but you’ll save yourself a £100 fine. Note bigger penalties kick in if you’re 30 days late (5% of the tax). But if you are struggling to pay, don’t ignore it but contact HMRC to see if they can agree to a payment plan.