Whether you're a sole trader, contractor, freelancer, director, landlord, or investor, completing a Self Assessment tax return can feel stressful and time-consuming. The rules are complex, the deadlines are strict, and the penalties for mistakes or late submissions can be costly.

At Simply Accounts, we take the weight off your shoulders. We handle the entire Self Assessment process from start to finish, ensuring your return is accurate, compliant, and optimised to reduce your tax bill where possible. More than that, we provide guidance throughout the year so you can plan ahead, manage cash flow, and make confident decisions about your income, investments, and business growth.

With us as your Self Assessment accountant, tax season doesn't have to be a source of stress – it becomes a smooth, supported process.

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Who we help

Our self assessment service is suitable for:

Sole traders

Earning over £1,000 in a tax year.

Freelancers and contractors

With multiple clients or income sources.

Company directors

Declaring income outside of PAYE.

Landlords and property owners

With rental income to declare.

Anyone managing multiple, or complex income streams

Such as combining employment, self-employment, property, or investments.

High earners

Those earning £150,000+ or higher-rate taxpayers.

Investors

With dividends, capital gains, or other taxable income.

Partners in partnerships

Requiring partnership and personal tax returns.

People aiming to be tax-efficient with pension contributions

Making the most of available tax reliefs and allowances through their Self Assessment

Anyone with untaxed income

That needs to be declared to HMRC.

Our services

What's included in our service

Completion and submission of Self Assessment tax returns

Filed directly to HMRC on your behalf

Guidance on allowable expenses and deductions

Relevant to your business or personal circumstances

Support for complex income streams

Landlords, contractors, freelancers, and high earners

Management of multiple income types

Dividends, rental income, capital gains, pensions, and more

Tax planning advice

To help you minimise liabilities and increase efficiency

Handling HMRC correspondence

We'll manage queries and resolve issues on your behalf

P11D preparation

For directors and employees with benefits in kind

Including P11D support ensures one of the trickiest parts of Self Assessment is taken care of, keeping you fully compliant and free from unexpected fines.

Our process

How our process works

Step 1

Onboarding and information gathering

We collect details about your income, expenses, dividends, rental income, pensions, and any previous returns.

Step 1
Step 2

Record review

We check all records for accuracy and completeness, ensuring nothing is missed.

Step 2
Step 3

Tax calculation

We calculate your taxable income, apply all reliefs and deductions, and ensure your return is as tax-efficient as possible.

Step 3
Step 4

Prepare and review return

You receive a draft return to review. We'll explain all the figures in plain English and answer any questions.

Step 4
Step 5

Submission

Once approved, we file your return electronically (or on paper if required) directly with HMRC.

Step 5
Step 6

Ongoing support

We handle any HMRC queries, plan ahead for next year, and provide practical advice whenever you need it.

Step 6

Benefits for you

Avoiding penalties – We file on time and keep you compliant
Avoiding penalties – We file on time and keep you compliant
Accurate calculations – No unwelcome surprises at year-end
Accurate calculations – No unwelcome surprises at year-end
Less stress – We handle the admin while you focus on your work or business
Less stress – We handle the admin while you focus on your work or business
Tax efficiency – We ensure you claim every deduction you're entitled to
Tax efficiency – We ensure you claim every deduction you're entitled to

Year-round advice – With a monthly retainer option, you get ongoing support, not just once a year

Year-round advice – With a monthly retainer option, you get ongoing support, not just once a year

We're not just here at tax season. With our support, you can spread the cost of your return and access advice throughout the year.

Book a free discovery call
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evaluation-and-assessment

Key deadlines

Paper returns – 31st October
Paper returns – 31st October
Online returns – 31st January
Online returns – 31st January
Tax payment – 31st January following the tax year
Tax payment – 31st January following the tax year

Payments on account – 31st January and 31st July (if applicable)

Payments on account – 31st January and 31st July (if applicable)

We'll track these deadlines for you, send reminders, and ensure everything is submitted on time – removing the worry and keeping you compliant.

FAQs

When is my Self Assessment deadline?

Paper returns are due by 31st October, online returns by 31st January, with payment also due by 31st January.

What records do I need to provide?

P60, P45, P11D forms, bank statements, invoices, receipts, dividend statements, rental income details, and pension contributions.

Can you help with rental or investment income?

Yes, we manage property, dividend, and investment income returns efficiently.

How can I reduce my tax bill legally?

We'll advise on all allowable expenses, reliefs, and deductions to minimise your tax liability.

What happens if I've missed a deadline?

We'll liaise with HMRC, file your return, and work to minimise penalties.

Do you submit online or on paper?

Most returns are filed online, but we can submit by paper if needed.

Can you help me plan ahead for next year?

Yes, we provide year-round guidance and can recommend steps to make your next return easier and more efficient.

Pricing

Our Self Assessment service is normally included in one of our bespoke packages, which spreads the cost into manageable monthly payments and gives you continuous support throughout the year. As a standalone service it ranges from £200–£500 + VAT, depending on the complexity of your situation. We highly recommend looking into our packages so you can relax knowing everything is covered by one single monthly payment.

Why choose Simply Accounts

Completing a Self Assessment can be daunting, but with Simply Accounts, you don't have to go through it alone. We'll take care of all calculations, deductions, and submissions, ensure you claim every relief you're entitled to, and handle HMRC queries on your behalf. Everything is explained clearly in plain English, reducing your stress and giving you confidence your return is right.

Get in touch

Make tax season stress-free. At Simply Accounts, we'll handle your Self Assessment with care, accuracy, and ongoing support, so you can focus on your work or business instead of HMRC deadlines.

Ready for hassle-free Self Assessment? Get in touch today and let our team take the stress out of your tax return.

Real people. Real support.

Not sure where to start with your accounts? Whether you're a sole trader, a growing limited company, or managing multiple properties, our friendly team is here to make things simpler.

Let’s Talk About Your Business

  • A quick, no-pressure chat with one of our expert accountants.

  • A chance to talk through your current challenges and goals.

  • Tailored advice on how we can support you from bookkeeping to tax.

  • Clarity on next steps, with zero jargon or hidden costs.

Ready to take the first step? Book your free call now.

Let's talk numbers. Get in touch.

You didn’t go into business to battle tax returns, juggle receipts, or second-guess your bookkeeping. That’s where we come in.

At Simply Accounts, we help business owners like you stop worrying about the numbers and get back to doing what you do best. Whether you need support with payroll, tax planning, or everyday bookkeeping—we’ve got your back.

Have a question? Need advice? Want to chat about how we can simplify your accounts?

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