When do common recurring tax deadlines fall? What other tax significant events are upcoming? What do I need to remember this month? 

This is a freeview 'At a glance' rolling calendar of common recurring tax deadlines, significant new tax measures and other tax significant events. 

April 2026

Tax deadlines

Date 

Deadline

1

Corporation Tax payment: 30 June 2025 year ends

5

P46(car) electronic: quarter to 5 April 2026

5

Tax year: 2025-26 tax year ends

5

National Insurance: normal deadline to pay voluntary Class 2 or Class 3 NI for 2019-20

5 Payrolling benefits: deadline to register for voluntary payrolling in 2026-27

6

Tax year: 2026-27 tax year begins

7

VAT return submission and payment (online): month-end or quarter 28 February 2026

14

CT61: return and payment for quarter ended 31 March 2026

19

PAYE, NIC and CIS payment (postal): month-end 5 April 2026

19

PAYE, NIC and CIS payment (postal): quarter-end 5 April 2026

19

CIS return: payments made to subcontractors in the month to 5 April 2026

22

PAYE, NIC and CIS payment (electronic): month-end 5 April 2026

22

PAYE, NIC and CIS payment (electronic): quarter-end 5 April 2026

30

Plastic Packaging Tax: return and payment quarter-end 31 March 2026

30

Corporation Tax returns: 30 April 2025 year ends

30

Annual Tax on Enveloped Dwellings: return and payment (or relief declaration) for properties within the scope of ATED on 1 April 2026

30

Non-resident landlord scheme: payment of tax for the quarter ended 31 March 2026

30

Inheritance Tax: payment of IHT on lifetime transfers between 6 April and 30 September 2025

New tax measures and other tax-significant events 

Date

Tax measure/event

1 The main rate of WDA will reduce from 18% to 14% for Corporation Tax. 
1 Late filing penalites for Corporation Tax will increase. 
5 The main rate of WDA will reduce from 18% to 14% for Income Tax. 
5 National Insurance: Relief for employers of veterans ceases. 

6

Making Tax Digital for Income Tax: self-employed businesses and landlords with business turnover above £50,000 report under Making Tax Digital for Income Tax Self Assessment. 

6 Inheritance Tax: 100% rates of Business Property Relief and Agricultural Property Relief capped to a combined £2.5m. Relief of 50% on the excess.
6 Inheritance Tax: Business Property Relief reduced to 50% on shares designated as 'not listed' on the markets of recognised stock exchanges, such as the Alternative Investment Market (AIM).  
6 Carried interest: taxed under the Income Tax framework, as trading profits from a deemed trade. 
April Mandatory registration of tax advisers who interact with HMRC on behalf of clients.  

Notes

For announcements made at the 2025 Autumn Budget and 2025 Spring Statement, see: 

For more key tax announcements in greater detail see: 

This calendar does not include: