Westminster tax returns for professionals, landlords and investors

Do I need a tax return in Westminster?

In brief: if you have income not taxed through PAYE, such as rent, dividends, gains, foreign income or self-employment, or you earn enough to lose Child Benefit or your personal allowance, you will usually need to file.

As a Westminster tax accountant, we prepare returns for consultants and senior employees, owners of flats in Pimlico and Bayswater, Soho creatives and residents with family assets overseas. Many Westminster returns involve more than one source of income, so we review the whole picture rather than just filling in boxes.

That review often finds things clients have missed: higher-rate pension relief not claimed, Gift Aid that reduces adjusted net income, or rent from a flat abroad that should be declared.

Common reasons HMRC needs a tax return

• Profits from freelance or self-employed work
• Rent from a flat, house or room, above the £1,000 property allowance
• Dividends from your own company or shares
• Gains on property, shares or crypto
• Income from overseas savings, property or pensions
• The High Income Child Benefit Charge
• A letter from HMRC asking you to file

Self-employed tax returns in Westminster

Soho remains a hub for film, post-production, advertising and theatre freelancers. We prepare returns that capture day rates, royalties and fees from several clients, and claim equipment, software and travel. See self-employed accountants and add bookkeeping if you would like records kept for you.

Landlord tax returns in Westminster

Westminster flats often have service charges, ground rent and managing agents, all of which can be claimed. We prepare clear rental schedules, apply mortgage interest relief and advise owners letting a flat while living abroad. Mortgage interest relief is a 20% tax credit, rising to 22% from April 2027 when property income gets its own 22%, 42% and 47% rates. More on landlord tax returns; for missed rent, the Let Property Campaign.

New to the UK? The foreign income and gains regime

Westminster is home to many people who have recently moved to the UK. Since April 2025, those arriving after 10 years of non-residence can claim relief on foreign income and gains for their first four years, but only by claiming it on a tax return. We check eligibility, make the claim and explain what happens after the four years end. See foreign income tax returns.

Partnership tax returns

If you run a business with someone else, the partnership files an SA800 and every partner reports their share. We handle the whole set, together. See partnership tax returns.

Capital Gains Tax reporting

Sold a flat, shares or an inherited property? Gains over £3,000 are taxable at 18% or 24%, and residential property sales have a separate 60-day reporting deadline. Our Capital Gains Tax team handles both returns.

Foreign income reporting

Savings, rent or pensions from abroad usually belong on the foreign pages of your return, with relief for overseas tax. If past years were missed, our WDF service sorts it out.

Crypto tax reporting

Crypto is taxed as property in the UK. We calculate gains using same-day, 30-day and Section 104 rules and complete the crypto boxes on your return. More on our crypto page.

Documents for your Westminster Self Assessment

Keep it simple: send what you have and we will tell you if anything is missing.

• Employment figures: P60, P11D for benefits
• Self-employment: sales, invoices and bank statements
• Expenses: receipts or a summary by category
• Property: rent received, agent statements and mortgage interest
• Investments: dividends, interest and sale contracts
• Overseas: foreign statements and proof of tax paid
• Pensions and Gift Aid: contribution and donation totals

Penalties for late filing

What if I miss the deadline? Miss 31 January and HMRC charges £100, even if no tax is due. After three months daily penalties start, and more follow at six and twelve months. New points-based penalties arrive for all Self Assessment from April 2027.

Why Westminster clients choose Wingate

• Chartered Certified Accountants and HMRC registered tax agent
• Fixed fees from £150, VAT included
• Experience with landlords, the self-employed, partnerships, investors and overseas income disclosures
• Fast replies by phone, email or WhatsApp
• Also VAT returns, company accounts, payroll, HMRC disclosures and tax investigation support

Looking elsewhere in the capital? See Self Assessment tax returns in London.

Official guidance: Check if you need to send a Self Assessment tax return · Self Assessment deadlines