Bookkeeping / Self Assessment Tax Returns

Self Assessment Done For You

Stress-free self assessment tax returns for sole traders, freelancers and sole trader landlords. Fully digital, accurate and filed on time.

✓ From £149 ✓ Fully Digital Process ✓ HMRC Compliant ✓ Fast Turnaround ✓ Sole Traders Welcome

We Help Everyone Who Needs to File

🧑‍💻 Sole Traders

Freelancers, contractors and self-employed individuals with business income from clients. We handle expenses, allowances and HMRC submission.

🏠 Sole Trader Landlords

Own a rental property and pay yourself? We handle rental income, allowable expenses and any overlap with self-employment income.

💼 Directors Taking Dividends

LTD company directors receiving salary and dividends need to declare personal tax. Our director return covers all income streams.

👨‍👩‍👧 Multiple Income Sources

Employed AND freelancing? PAYE plus rental income? We handle complex tax situations across all income types.

📈 Investors & Shareholders

Capital gains, dividends, and investment income all go on your self assessment. We ensure nothing is missed.

🌍 Non-Resident / Expats

UK income while living abroad? We handle non-resident returns and double taxation treaty claims.

How It Works

Everything is done online through your client area. No in-person meetings needed.

1

Register & Tell Us Your Situation

Create your free client account and select Self Assessment. Answer a few questions about your income types.

2

Upload Your Documents

Upload income records, expense receipts, P60s, bank statements and anything else relevant — all through your secure portal.

3

We Prepare Your Return

Our team reviews your documents, calculates your liability, claims all allowances and prepares your return for review.

4

Review, Approve & File

We send you a summary via your client portal. Once you approve, we submit to HMRC and send you confirmation.

Transparent Fixed Fees

Sole Trader Return

£149
per tax year

Simple sole trader / sole trader landlord return

  • Employment income (PAYE)
  • Self-employment / freelance income
  • Dividends & savings interest
  • Rental income (sole trader landlords)
  • Allowable expenses & reliefs
  • HMRC online submission
  • Tax liability calculation
  • Payment on account guidance
Get Started →
📅

Deadline

31 January each year for the previous tax year (5 April)

Fast Turnaround

We aim to complete returns within 5–7 working days of receiving your documents

🔐

Secure Portal

All documents uploaded securely through your client account — no email attachments needed

What to Upload

After registering, you'll upload your documents through your secure client portal. Here's what you may need:

For Everyone
  • P60 or P45 (if employed)
  • Bank statements
  • Any HMRC correspondence
Sole Traders
  • Business income records or invoices
  • Business expense receipts
  • Mileage log (if applicable)
  • Prior year return (if available)
Landlords
  • Rental income records
  • Mortgage interest statements
  • Letting agent fees & expenses
  • Insurance, repairs and maintenance costs
Directors / LTD
  • Salary payslips from your company
  • Dividend vouchers
  • P11D (benefits in kind) if applicable
  • LTD company accounts

Don't worry if you're unsure — once you register, we'll ask you the right questions to get exactly what we need.

Ready to Get Started?

Create your free client account and we'll guide you through the whole process. No accountant jargon. No complicated forms.

Start My Self Assessment → Ask a Question First →
📞 07346 812364
✉ hello@advantagecatalyst.co.uk
📍 41c Effingham Street, Ramsgate, CT11 9AT