Taxes & Money
Taxes, payments, credits and financial administration.
GB United Kingdom6 guidesOfficial-source workflowTaxes & Money procedures
Browse published guides with quick facts, official-source verification and clear next steps.
Check why your PAYE tax code may be wrong, correct your employment, pension, income or benefit details with HMRC, and see when a new code should reach your employer.
Claim HMRC tax relief for qualifying work expenses you paid yourself, including uniforms, mileage, professional fees, business travel and equipment.
Update your home address with HMRC after moving so your Income Tax, National Insurance, Child Benefit and State Pension records stay current.
Find the correct HMRC route to reclaim Income Tax you overpaid through PAYE, a pension, job expenses, redundancy or Self Assessment.
Claim UK Marriage Allowance, transfer £1,260 of Personal Allowance to your spouse or civil partner, backdate eligible years and understand the Self Assessment rules.
File your UK Self Assessment tax return online with HMRC for the 2025 to 2026 tax year, including registration, records, deadlines, payment and late filing penalties.