PayToolkit's self assessment articles: practical UK tax guidance, worked examples, and links to the right free calculator for each topic.
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.
Self AssessmentEverything you need to gather before filing your tax return. All documents, deadlines, and step-by-step filing guidance for 2026/27.
Tax TipsUnderstand how advance tax payments work, who needs to make them, and how to reduce them if your income has dropped.
Self EmployedFrom missed deadlines to wrong expenses, learn the five most common tax mistakes that cost self-employed people hundreds in penalties and lost tax relief.