Dates & deadlines
30 January 2026
Non-resident landlord scheme
Payment of tax for the quarter ended 31 December 2025
31 January 2026
Plastic Packaging Tax
Return and payment quarter-end 31 December
EFRBS
Report schemes starting in 2024/25
IR35
Amend or correct 2024/25 deemed payment on employer return and pay balance of PAYE/NIC
National Insurance
Form CA72A (deferral) for the self-employed
Self Assessment
File outstanding 2021/22 returns to displace a determination
Self Assessment
First 2025/26 payment on account
Self Assessment
2024/25 balancing payment
Self Assessment
Amendments to 2023/24 tax returns
Self Assessment
2024/25 online tax returns
Talk to us about upcoming deadlines
From high-level advice with the future in mind to practical, hands-on support with the day-to-day challenges of running a business, Alton & Co offers every accountancy service you could need. From corporation tax returns to personal tax planning, from bookkeeping to business startup, our team is ready to join you on your journey to growth.