Windsor • Fixed Price Service

Self Assessment Tax Return Services
In Windsor

Managing your tax obligations can be a complex task, but with the right support from professionals offering Self Assessment Tax Return Services in Windsor, you can ensure accuracy and compliance with HMRC requirements. Whether you are self-employed, a landlord, or a high-net-worth individual, Self Assessment Tax Return Services in Windsor help you organise your income and expenses, claim allowable deductions, and submit your return on time to avoid penalties. The firms featured in the directory include qualified ACCA, ICAEW, and AAT professionals who specialise in personal tax return preparation and can also assist with hmrc self assessment queries, VAT registration, and Corporation Tax filings. By choosing Self Assessment Tax Return Services in Windsor, you benefit from local expertise and a thorough understanding of current tax legislation. AccountingFirms was established in 2019, built by ICAEW and ACCA accountants to help you find and compare verified, regulated accountants in Windsor. You can browse local firms, compare providers, and connect with professionals who offer tailored support for your hmrc personal assessment needs. Whether you require assistance with a straightforward personal tax return or a more complex financial situation, the directory makes it simple to identify the right accountant for your circumstances. Using Self Assessment Tax Return Services in Windsor ensures you fulfil your filing obligations efficiently and with confidence, knowing your affairs are handled by recognised experts who adhere to strict professional standards.

Fixed price — no hidden fees5-day turnaroundACCA qualified100% online

Director's Personal Self Assessment (SA100)

Director's Personal Self Assessment (SA100)

£199+VAT
  • SA100 personal tax return prepared and filed
  • Director's salary and dividend income declared
  • PAYE income from other employment included
  • All allowable personal expenses identified and claimed
  • Income Tax and Class 4 NIC calculated
  • Payments on account calculated and explained
  • HMRC submission as your authorised agent
Built by chartered accountants
ICAEW & ACCA-operated since 2019
26,000+ UK firms listed
Largest UK accountancy directory
Verified regulated firms only
ICAEW · ACCA · CIOT · AAT · ICB
Thousands of verified reviews
Google · Trustpilot · TrustIndex & more
Free to browse
No signup · No broker fees · Direct contact
Firms independently reviewed on:★★★★★Google Reviews★★★★★Trustpilot★★★★★TrustIndex★★★★★FreeIndex★★★★★Yell.com★★★★★VouchedFor

What's Included — Complete Transparency

✓ No hidden fees

Included in £199+VAT

  • SA100 personal tax return prepared and filed
  • Director's salary and dividend income declared
  • PAYE income from other employment included
  • All allowable personal expenses identified and claimed
  • Income Tax and Class 4 NIC calculated
  • Payments on account calculated and explained
  • HMRC submission as your authorised agent

Available as add-ons

  • Company Dissolution (DS01) (£148.98+VAT)
  • Company Formation (Incorporation) (£200.00+VAT)
  • Confirmation Statement (CS01) (£92.00+VAT)
  • Corporation Tax Returns (£500.00+VAT)
  • HMRC Enquiry & Letter Support (£98.98+VAT)
  • Limited Company Full Compliance Bundle (£99.00+VAT)
  • Micro Entity Accounts (£398.99+VAT)
  • Monthly Bookkeeping (£79.00+VAT)
  • P11D — Benefits in Kind (£49.00+VAT)
  • Payroll — Monthly (£28.99+VAT)
  • Registered Office Address (£120.00+VAT)
  • VAT Registration (£79.00+VAT)
  • VAT Return (per quarter) (£89.00+VAT)
  • Years End/Annual Accounts & Tax Return (£499.00+VAT)

Not sure if you need an add-on? Contact us first — we'll tell you honestly before you book.

How It Works — 3 Simple Steps

Fully online • No meetings needed
1

Book & Pay

Complete your booking online. Pay securely via Stripe. Receive instant confirmation with a document checklist.

2

Share Your Documents

Upload your P60, self-employment records and any other income details via our secure portal. No paperwork needed.

3

We File With HMRC

Your ACCA accountant prepares and submits your return within 5 working days. You receive your tax calculation.

Why Choose Accounting Firms?

✅

Fixed, Transparent Pricing

No hidden charges or unexpected bills. Our pricing is clear from the start, so you know exactly what's included before we begin.

⚡

Fast & Stress-Free Process

We make accounting simple. Upload your details, answer a few questions, and our team handles the paperwork and submissions for you.

👨‍💼

Qualified UK Accounting Experts

Work with experienced UK accountants who understand HMRC requirements and provide practical advice tailored to your situation.

🛡️

HMRC Compliance & Accuracy

From tax returns to annual accounts, we help ensure your records are prepared correctly and submitted on time to reduce errors and penalties.

📞

Dedicated Support When You Need It

Have questions? Our team is available to guide you through every step and explain things in plain English.

📈

More Than Filing — Business Growth Support

Beyond compliance, we help businesses improve financial visibility, manage cash flow, and make better decisions for long-term growth.

What Windsor Clients Say

★ 4.9 from 312 reviews
★★★★★

"Fixed price meant no nasty surprises. My return was done in 3 days and Sarah caught expenses I'd missed that saved me £340 in tax. Will be back every year."

James O., Windsor•IT ContractorVerified
★★★★★

"First time filing self assessment as a freelancer. I was dreading it. The whole process was explained clearly, everything was done online and I didn't have to do anything except provide my records."

Priya K., Windsor•Graphic DesignerVerified
★★★★★

"Used to pay £350 to my high street accountant. Same quality service here for £149+VAT and I didn't even have to leave the house. Absolute no-brainer."

Marcus T., Windsor•Personal TrainerVerified

HMRC Late Filing Penalties — What You Risk

£100

1 day late automatic penalty

+£900

£10/day for up to 90 days
(after 3 months)

+5%

of tax owed or £300 after 6 months

+5%

further surcharge after 12 months late

Avoid every single one of these penalties

Our ACCA accountant files your return in 5 days. Guaranteed on time.

Self Assessment Tax Return Services in Windsor — Complete Guide 2026

Frequently asked questions

What is included in Self Assessment Tax Return Services in Windsor?

Services typically include reviewing your income and expenses, identifying allowable deductions, completing the SA100 form, and submitting it to HMRC. Accountants also advise on payments on account and help you plan for future tax liabilities to ensure you remain compliant with current regulations.

How do I choose a qualified accountant for my tax return in Windsor?

Look for professionals with ACCA, ICAEW, or AAT accreditation, as these bodies ensure high standards of training and ethics. You can browse local firms on AccountingFirms, compare their experience and client reviews, and select an accountant who specialises in personal tax returns and understands your specific financial situation.

Can an accountant in Windsor help with HMRC enquiries or audits?

Yes, many accountants offer representation during HMRC enquiries or compliance checks. They can prepare the necessary documentation, communicate with HMRC on your behalf, and provide expert advice to resolve any issues. This reduces stress and ensures your rights are protected throughout the process.

What is the difference between a personal tax return and a Self Assessment?

A personal tax return is the form you complete to declare your income and gains, while Self Assessment is the system HMRC uses to collect tax on income not taxed at source. In practice, the terms are used interchangeably, and both require accurate reporting to avoid penalties or interest charges.

Do I need to file a tax return if I am employed in Windsor?

If your only income is from employment and tax is deducted through PAYE, you may not need to file a return. However, if you have additional income from self-employment, rental properties, investments, or savings interest over certain thresholds, you must register for Self Assessment and submit a return each year.

How much do accountants in Windsor charge for a Self Assessment tax return?

Fees vary depending on the complexity of your finances, but typical costs range from £150 to £400 for a straightforward return. More complex cases involving multiple income sources, capital gains, or foreign income may cost more. It is advisable to request quotes from several firms to compare pricing and services.

About Accounting Firms

AccountingFirms.co.uk is the UK's dedicated accountant comparison website, helping individuals, sole traders, landlords, startups, and SMEs instantly compare accountancy and tax fees from trusted UK accounting firms.

Find and connect with qualified accountants, tax advisers, bookkeepers, and business advisers using advanced search filters, verified profiles, and genuine reviews aggregated from Google, Trustpilot, Yelp, and other trusted platforms.

Over 26,000+ UK Accountants in One Place

Explore the UK's largest independent directory of accountants regulated by professional bodies including ICAEW, ACCA, AAT, CIMA, CIPFA, AIA, IFA, and other recognised UK accountancy bodies.

Affordable Online Accounting Services

Buy fixed-fee accounting packages online with confidence. Services are delivered by experienced UK-qualified accountants and tax advisers, covering:

Self Assessment Tax ReturnsLimited Company AccountsCorporation TaxVAT ReturnsPayrollBookkeepingCISCompany FormationTax Planning and Business Advisory

A Marketplace for Accountants

For accounting firms, AccountingFirms.co.uk is more than a directory. It's a powerful lead generation platform, accountant marketplace, and business growth hub, helping practices attract new clients, increase online visibility, generate qualified leads, and win more accounting and taxation work across the UK.