Tax Deadlines

PayToolkit's tax deadlines articles: practical UK tax guidance, worked examples, and links to the right free calculator for each topic.

Tax Tips

Payments on Account Explained: Why HMRC Wants Tax in Advance

Understand how advance tax payments work, who needs to make them, and how to reduce them if your income has dropped.

May 2026 · 5 min read
Self Assessment

Self Assessment Checklist 2026/27: Documents, Deadlines & Steps

Everything you need to gather before filing your tax return. All documents, deadlines, and step-by-step filing guidance for 2026/27.

May 2026 · 6 min read
Self Assessment

How to Calculate Your Self Assessment Tax Bill 2026/27

Step-by-step guide to working out your Income Tax, Class 2 and Class 4 NICs, payments on account and key deadlines for 2026/27.

June 2026 · 10 min read