To make sure you’re ‘in the know’ about upcoming dates and deadlines in the UK accounting tax calendar, we’ve popped them all into a handy list so they’re in one place. All you need to do now is pop the dates in your diary, or print this page out and pin it up for a bit of numbers-based artwork if that’s your thing.
2023 Accounting Calendar
January
1st: VAT Penalty Changes
A new penalty and interest regime for the late submission of VAT returns and late payment will apply for periods beginning on or after 1st January 2023. These replace the previous default subcharges.
14th: CT61 Income Tax Due Date
Filing for CT61 Income Tax for the quarter to 31st December due.
31st: Self Assessment Tax Return Deadline
Deadline to file your Self Assessment Tax Return for the tax year ending 5th April 2022.
31st: Income Tax Payments Due
First Payment on Account for Income Tax is due for the financial year 2022/2023 and balancing payment for 2021/2022.
February
2nd: P46 (Car) Submission Deadline
Final day to submit P46 (Car) for employees whose car/fuel benefits changed during the quarter to 5th January 2023.
March
1st: New Advisory Fuel Rates
New Advisory Fuel Rates (AFR) come into force from today.
15th: HM Treasury Spring Budget 2023
April
1st: Corporation Tax Rate Rise to 25%
From 1st April 2023, the corporation tax rate rises to 25%, affecting companies with profits of £250,000 and over. A small profit rate of 19% will apply to companies with profits below £50,000, with a marginal rate for profits between £50,000 and £250,000.
1st: R&D Changes
Research and Development (R&D) reforms will apply from 1st April 2023.
1st: Business Rates
The 50% relief for retail, hospitality and leisure businesses ends, and properties will be revalued to April 2021 values.
5th: End of 2023 Tax Year
The last day of the tax year of 2023.
PAYE
For employees
This is the last date to claim a refund for tax overpaid in earlier years. 5th April 2023 is an important tax rebate date – the deadline for claims relating to tax year 2018/2019.
SELF ASSESSMENT
This is the final date for claiming a rebate for any tax overpaid in earlier years. 5th April 2023 is an important tax rebate date – the deadline for claims relating to the tax year 2018/2019.
6th: Start of 2023 Tax Year
The first day of the new tax year, 2024. New tax rates come into effect.
6th: Income Tax 45% Rate Change
From 6th April 2023, the 45% additional rate of income tax threshold will be reduced from £150,000 to £125,140.
6th: Making Tax Digital
MTD for income tax self-assessment (ITSA) will not take effect until 6th April 2024 for self-assessment taxpayers (not partnerships), it will be mandatory for individuals who were self-employed or collecting property income before 6th April 2023 with total gross income exceeding £10,000 in a tax year. The requirements are different for those who became a landlord or sole trader after 6th April 2023.
6th: Basis Period
New rules for basis period reforms are taking effect for the 2023/24 tax year (tax year beginning 6th April 2023) affecting how unincorporated businesses’ and partnerships trading income is allocated to tax years.
6th: Capital Gains Tax
The annual exempt amount will be cut from £12,300 to £6,000 from 6th April 2023 and then to £3,000 from April 2024.
19th: Final PAYE Return Deadline for Employers
Deadline to file final PAYE Return for Employers for periods 6th April 2022 to 5th April 2023.
May
3rd: P45 Deadline for Car/Fuel Benefit Changes
Final day to submit P46 (Car) for employees whose car/fuel benefits changed during the quarter to 5th April 2023.
31st: P60 Deadline for 22/23
Deadline for employees to receive P60 for the 2022/2023 tax year.
PAYE
For employers
This is the final date for giving employees a P60 form. This form shows employees how much taxable salary they were paid in the previous year and how much Income Tax was deducted for their wages.
June
1st: Advisory Fuel Rates
Advisory fuel rates for company car users to be used from this date.
July
5th: PAYE Settlement Agreement Deadline
Deadline to reach PAYE Settlement Agreement for the 2022/2023 tax year.
6th: P11D Deadline for 22/23
Submissions for P11D due for the 2022/2023 tax year.
PAYE
For employers
This is the final date for submitting a P11d form to HMRC and giving employees a copy. This form provides information on any taxable benefits or expenses paid to employers or directors in the previous tax year.
6th: Reporting of Share Incentives Deadline
Returns of information on employees Share Incentive should be filed on or before this date.
31st: Second Payment On Account Deadline
Deadline for Second Payments On Account for the self-employed.
August
3rd: P46 Deadline for Car/Fuel Benefit Changes
Final Day to submit P46 (Car) for employees whose car/fuel benefits changed during the quarter to 5th July 2023.
September
1st: Advisory Fuel Rates
New Advisory Fuel Rates (AFR) for company car users come into force today.
October
5th: Self Assessment Registration Deadline
Deadline to submit Self Assessment Registration to HMRC, including Income/Capital Gains.
31st: Paper SA Tax Returns Deadline
All paper Self Assessment tax returns are due at the end of October.
November
2nd: p46 (Car) Submission Deadline
Final day to submit P46 (Car) for employees whose car/fuel benefits changes during the quarter to 5th October 2023.
December
1st: Advisory Fuel Rates
New Advisory Fuel Rates (AFR) for company car users come into force today.
30th: Overdue Tax Collection to be collected monthly
Deadline for anyone who is self-employed but also receives income under PAYE to elect to have overdue tax collected monthly under a PAYE tax code. To qualify, income must be less than £3,000 and the person must submit an online Self-Assessment tax return by that date.
As well as the above dates, there are many recurring Monthly and Quarterly Deadline/Due Dates to be aware of.
7th
VAT registered only
VAT Return submission and payment deadline.
The deadline for VAT Returns and payments of Accounting is due on the 7th after the end of each month.
14th
Limited Companies Only
Corporation Tax Quarterly Instalment Due Date
Quarterly instalment payments of corporation tax must be paid on the 14th after the end of the month.
19th
Employers Only
Deadline for postal CIS, NICs and PAYE payment
Postal CIS, NICs and PAYE payment must reach HMRC by the 19th of the month.
22nd
Employers Only
Electronic remittance Deadline for CIS, NICs and PAYE
Electronic CIS, NICs and PAYE payment must be completed on the 22nd if you pay monthly or quarterly.
Annual Due Dates for Limited Companies
12 months after year end:
Annual Filing Corporation Tax Due Date
Limited Companies Only
Corporation tax return filing is due 12 months after the end of a limited company’s financial year.
9 months after year end:
Company Accounts Filing Due Date Companies House
Limited Companies Only
9 months after your accounting period, annual accounts must be filed with Companies House.
9 months and 1 day after year end:
Corporation Tax Payment due date
9 months and 1 day after your accounting period, a Company’s Corporation Tax Liability is due for payment.
Other Important Dates
Report and pay Capital Gains Tax on residentials property
You have 60 days from completion on your residential land and/or property to declare and pay any Capital Gains Tax Liability.