Self-Assessment Tax Returns

Personal Tax Return, done right - the first time.

We prepare, review, and file your Self-Assessment accurately and on time, so you can stop worrying about HMRC and get on with life.

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  • One-Price - All inclusive
  • Tax Return done in UK
  • Filed in as little as 48 Hours
Who we help?

Self-Assessment for people who want it done properly.

Whether your income is simple or messy, we make sure your return is accurate, compliant, and optimised — without jargon or panic.

First-time filers

Perfect if you’re filing for the first time or think you’ve overpaid tax in the past. We guide you step-by-step, check eligibility for reliefs, and make sure nothing is missed.

Self-employed & Freelancers

From freelancers to contractors, we make sense of invoices, expenses, deductions, and HMRC rules — so your return is accurate and optimised.

Investors & Landlords

If you earn from investments or property, we help you navigate allowances, reporting rules, and tax treatments — including short-lets and Airbnb income.

High Earners & International Taxpayers

Higher incomes and cross-border situations need precision. We support high earners and expats with accurate reporting, planning insight, and HMRC-compliant filings.

What we do?

Everything your Self-Assessment needs — Nothing it doesn’t

We go beyond filing forms — turning complex income, reliefs, and rules into clarity and confidence.
You get an accurate return, filed on time, with nothing missed and no unnecessary stress.

Simple Preparation

We prepare your return based on your full income picture — not assumptions. Every figure is reviewed carefully to make sure it’s accurate and HMRC-compliant.

Payments on Account Guidance

We explain what you owe, when it’s due, and why. Clear guidance so there are no surprises and no last-minute panic.

Expense & Relief Review

We check what you can legitimately claim and apply the correct allowances. Nothing missed. Nothing risky. Just a return that’s right.

Late & Missed Returns

Behind on your Self-Assessment or worried about penalties? We help you get back on track and deal with HMRC properly.

HMRC Filing

Once you approve, we submit your Self-Assessment directly to HMRC. Filed correctly, on time, and confirmed.

Ongoing Support

Questions before or after filing? We’re here. Clear answers, practical advice, and support when you need it.

Why us?

Your Tax Accountant for continuous support.

This isn’t just about filing a return.
It’s about having someone on yourside — and doing it properly.

  • Dedicated contact & unbeatable access
  • 100% UK-based, personal, and always on your side.
  • Transparent pricing, no surprises
  • Accredited by the major UK accounting body
Not thousands. Just dedicated to every client we work with.

Winning hearts and trust.

Hundreds of Self-Assessment returns filed accurately and on time for clients across the UK.

They made my Amazon business simple. The Calculator Guy took the stress out of VAT and filings. I finally understand my numbers and can focus on growing sales.

Amir Qureshi Amazon FBA Seller

As a consultant, I hated dealing with tax returns. Now it’s all handled, and I get proactive advice on saving money too.

Sarah Bennett Marketing Consultant

My rental accounts and self-assessment are always filed on time. I never have to worry about HMRC letters again.

James Patel Property Investor

They don’t just file returns — they give me insights that actually help me grow my Shopify store.

Ella Martin The Summer House
Simple, transparent pricing — no hidden fees.

Get started with fixed fee.

Pay securely via Stripe – Once payment is complete, we’ll email you secure access to submit your documents.

Explore All Pricing Plans
Personal Tax Return

For individuals needing just a tax return.

£ 150 / return
  • Self-Assessment tax return
  • Multiple income sources included
  • HMRC communication handled
  • Ready for Filing in 48 Hours
Get Started
Register with HMRC

We register you with HMRC and obtain your UTR..

£ 15 / one-off
  • Free consultation
  • Support to get you started
  • HMRC communication handled
  • Submitted in 24 hours
Register Now
FAQs

Questions? We're glad you asked

Here's a little more about how we operate. Got a more specific question? Feel free to get in touch.

E-commerce brings unique challenges — multi-channel sales, VAT across borders, payment platform fees, and inventory management. A specialist accountant helps you stay compliant, track true profitability, and free up time to focus on growth.

Yes — we’re a UK-based, AAT-regulated firm. You’ll always deal directly with a small, dedicated team that knows your business personally.

We go beyond compliance. We combine smart tech, industry expertise, and bold advice to help you keep more profit and grow your business.

Our packages are transparent and fixed, starting from £75 per month for ecommerce and digital businesses.

Yes. Filing tax returns is just the beginning. We provide financial insights, cashflow planning, and growth strategies so you can make confident decisions.

Absolutely. Whether it’s overdue returns, VAT backlogs, or bookkeeping catch-up, we’ll get you back on track and deal with HMRC on your behalf.

We use Xero, QuickBooks, and FreeAgent, and integrate with platforms like Amazon, Shopify, Stripe, and PayPal — giving you a seamless system that fits your business.

Yes. We primarily serve UK-based businesses, but we also help overseas sellers trading in the UK through platforms like Amazon and Shopify.

We keep it simple. You’ll get clear updates, direct access to your accountant, and a client portal where you can see deadlines, tasks, and documents in one place.

Just book a free consultation. We’ll review your situation, explain what you need, and build a package that works for you — no jargon, no hard sell.

Let's talk about
working together

Email: hello@thecalculatorguy.co.uk

Phone: +44 203 411 1878