69,750+ Filed Self Assessment Tax Returns
395+ Grown Businesses
25+ Years Of Experience
Swift Accountants
Precision You Can Trust, Savings You Can Keep
We specialise in preparing and filing Self Assessment tax returns for sole traders, company directors, landlords, contractors, investors, and high earners. Our certified team understands the UK rules, deadlines, and reliefs that impact you. We meticulously capture every income source and allowable expense, optimise your tax position, and ensure full HMRC compliance—so you avoid penalties and keep more of what you earn. With us handling the details, you can focus on your work while we deliver clarity, confidence, and maximum efficiency.
Build a Lasting Legacy, Transform Your
Vision Into Reality
With us, it’s not just about submitting a self assessment tax return—it’s about crafting a long-term tax strategy. We’re there at every turn, with the right tools and insights, turning complexities into stepping stones toward your goals.
Fast replies, plain English, and a real human on the end of the phone, whenever you need us. Filing a self assessment tax return can feel overwhelming—our clear, supportive communication makes the process stress-free.
Our expertise is focused exclusively on Self Assessment tax returns. Whether you’re a sole trader, landlord, company director, contractor, or investor, we know the rules, deadlines, and reliefs that apply to you.
Trusted and recommended by thousands of clients across the UK, our 5-star Google reviews reflect our professionalism, accuracy, and dedication to making tax returns simple and efficient.
We don’t just file your return and move on—we actively look for ways to reduce your bill. From allowable expenses to reliefs, pension planning, and dividend optimisation, we maximise savings all year round.
Upload your documents, track deadlines, and monitor your Self Assessment tax return progress anytime—on desktop or mobile.
No “meter running.” Ask as many questions as you want—always included.
Switching accountants has never been easier—we handle everything with zero disruption.
Your personal accountant is just a call, message, or WhatsApp away—ready to answer any Self Assessment questions year-round.
At Swift Accountants, we’re not just filing tax returns
we’re redefining how Self Assessment should feel.
Move beyond the stress and confusion, and experience a partnership that’s proactive, supportive, and built entirely around your needs.
🚀 Total control. Real-time clarity. True peace of mind.
Our client portal is designed exclusively for limited company owners. It’s not just software—it’s your business command centre, always open and always secure.
👉 Access your financial future anytime, anywhere. File with confidence and shape your legacy with Swift Accountants.
Here’s why thousands of clients across the UK trust Swift Accountants:
Conversation Costs Nothing, But
Could Change Everything
Every stress-free tax return starts with a single conversation. That chat is completely free—and it could be the moment that changes how you manage your finances. Book Your Free Call — no pressure, just possibilities.
Filing a Self Assessment tax return in the UK can be overwhelming. Deadlines, HMRC compliance, penalties, allowable expenses, and constant rule changes create stress and uncertainty. At Swift Accountants, we turn complexity into clarity, stress into certainty, and Self Assessment into your financial advantage.
We prepare, review, and file your Self Assessment tax return directly with HMRC. Every income source, allowance, and relief is captured so your return is accurate, compliant, and tax efficient—never paying more tax than legally required.
Self-employed & sole trader tax returns Landlord / property income reporting Directors’ salary & dividend declarations Dividend & investment income Capital gains (shares, crypto, property) Partnership & LLP returns Overseas income and double taxation relief
Missed a deadline or received a penalty? We handle late filings, negotiate penalty reductions where possible, and represent you in any HMRC enquiries—giving you peace of mind.
We don’t just file returns; we plan your personal tax strategy. From using allowances and reliefs to optimising pension contributions, we help you keep more of your hard-earned money.
For company directors and business owners, we structure your salary/dividends mix, manage benefits and loans, and integrate your Self Assessment with company tax planning—so both your business and personal finances work in harmony.
We identify and apply every relief available to you: property expense claims, marriage allowance, pension relief, Gift Aid, ISA use, and more.
We connect your return with platforms like Xero, QuickBooks, or FreeAgent for real-time visibility. Upload receipts, bank statements, and documents directly to our secure portal, anytime, anywhere.
No more HMRC stress—we deal with letters, queries, and communications directly, so you can focus on your work.
Switching accountants or filing your first ever Self Assessment? We handle the process end-to-end—setting you up with secure systems and guiding you step by step.
Your dedicated Self Assessment accountant is always on hand. Ask unlimited questions, get clear answers in plain English—no call centres, no hidden charges.
…And It’s Always Tailored Just for You
At Swift Accountants, we don’t believe in one-size-fits-all. Whether you’re self-employed, a landlord, a contractor, or a company director, we create a bespoke Self Assessment tax return service around your situation, your goals, and your future.
From your first return to long-term financial planning, Swift Accountants is more than a filing service—we’re your partner in peace of mind.
Choose Swift Accountants and discover what’s possible when your accountant is as committed to your finances as you are.
And The Best Part?
All Of The Above And So Much More
Ready to experience a Self Assessment tax return service that goes beyond the ordinary? Join thousands of individuals, landlords, contractors, and directors across the UK who trust Swift Accountants with their tax returns every year. Book your free consultation today. We’ll take the stress off your shoulders, keep you compliant with HMRC, and make sure you never pay a penny more tax than you have to.
Why Pay More, When You Can Pay Less And
Achieve More !
Discover a partnership that values more than just numbers—it values you. At Swift Accountants, we’re not just invested in filing your Self Assessment tax return—we’re invested in helping you achieve lasting financial success. We’re committed to being more than your accountants; we’re your partners in growth, tax efficiency, and peace of mind. From eliminating HMRC stress to unlocking savings you didn’t know were possible, we make sure every return works in your favour.
Trusted by 1000+ Clients
With Swift Accountants, you're not just planning for success - YOU ARE ENSURING IT!!!
Experience the difference of a partner who
Listens and Understands
At Swift Accountants, our Self Assessment tax return service isn’t just about numbers—it’s about building a partnership where you feel truly heard, respected, and supported. We take the time to understand your unique circumstances, explain every step in plain English, and ensure you’re confident in your return. For us, communication isn’t just about sending information—it’s about making sure you understand it, and that your goals are always at the heart of our advice. With Swift Accountants, you gain more than compliance—you gain clarity, confidence, and a trusted partner who puts you first.
We Care, You Prosper
Clear Answers, Confident Decisions
A: While you can file your return yourself, UK tax rules are complex and constantly changing. A specialist accountant ensures your return is accurate, all allowances are claimed, and you avoid HMRC penalties—often saving you far more than our fee.
A: We handle the full process: gathering income and expense details, preparing and submitting your return to HMRC, ensuring compliance, and advising on tax efficiency. We also deal with HMRC correspondence, late returns, penalty appeals, and provide year-round tax-saving advice.
A: Yes, but mistakes are common and can be costly. Missing a deadline results in instant fines, and errors may trigger HMRC investigations. Using a professional gives you peace of mind, accuracy, and confidence that you’re paying no more tax than necessary.
A: Costs vary depending on complexity (self-employed, landlord, multiple income sources, etc.). At Swift Accountants, we offer transparent, fixed fees with unlimited support—no hidden charges, no “meter running.”
A: You must report all taxable income outside standard PAYE, including: Self-employment profits (sole traders/contractors) Rental income from property Dividends and investment income Capital gains (shares, crypto, property sales) Overseas income Any income over £100,000 or requiring relief claims
A: Allowable expenses depend on your situation, but typically include business costs (equipment, mileage, home office use), rental property costs, professional fees, pension contributions, and Gift Aid. We ensure every eligible deduction is claimed.
A: HMRC issues automatic penalties from day one, increasing over time. We can file late returns quickly, appeal penalties where possible, and set up manageable payment plans with HMRC if needed.
A: Absolutely. We specialise in complex cases including property sales, crypto gains, CIS contractors, landlords, and high earners. Our team ensures every figure is correct and every relief is applied.
A: Paper returns: 31 October Online returns & first payment: 31 January Second payment on account (if applicable): 31 July We provide reminders and file everything on time.
A: We combine award-winning communication, a 24/7 secure portal, and dedicated tax specialists. With unlimited advice, proactive tax planning, and 5★ client reviews, we don’t just file your return—we protect your future.
A: Very easy. We handle the entire process, from contacting HMRC to setting up your portal access. Whether it’s your first return or you’re moving from another accountant, switching is 100% free and hassle-free.
At Swift Accountants, we are specialists in Self Assessment tax returns, dedicated to helping individuals, sole traders, landlords, contractors, and company directors stay compliant and tax-efficient. From preparing your return and managing income records to optimising expenses and reliefs, we understand the unique challenges that Self Assessment brings—tight deadlines, complex HMRC rules, and the risk of penalties. That’s why we work around your schedule, meeting you online, over the phone, or in person—whatever is most convenient. Our mission is to make your Self Assessment tax return simple and stress-free, so you can focus on your work or business while we take care of HMRC. With tailored Self Assessment services, we ensure your return is filed on time, every allowance is claimed, and you never pay a penny more tax than you should. Stay compliant, tax-efficient, and confident that your finances are in safe hands.
No Obligation & Expert Support
Guaranteed!
Communication Excellence Meets Seamless Financial Management
By Phone - 01244 730 300
WhatsApp - Message Us 24/7
Customer Portal - Access 24/7
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