Limited offer — Now £99, whatever your tax situation
Self Assessment tax returns, made simple.
Limited time only
Fixed fee
£150
Save £51
£99
Whatever your tax situation. No hidden costs.
- Speak to a human accountant, not AI
- Prepared, checked and filed with HMRC
- Get SA302 and Tax Year Overview
- One price, agreed before we start
TX Accountants
UK-wide, online
Chartered Certified Accountants
Direct access to your accountant
Phone & WhatsApp support
Fixed fee, no hidden costs
Who the service is for
Who needs to file a Self Assessment tax return?
Most employees pay tax through PAYE and never file a return. You’ll usually need one when some of your income isn’t taxed at source. These are the most common reasons:
Self-employed sole traders
Landlords
Company directors
Higher earners
Untaxed income
Partners and capital gains
Not sure whether you need to file? HMRC’s rules have other triggers too. Send us a message and we’ll check for you — free of charge.
How it works
Four steps to a filed tax return.
01
Get in touch
Call, WhatsApp, or book online. We’ll check what your return needs to cover and get advice accordingly.
02
Send your records securely
03
We prepare and check your return
04
You approve, we submit
Key dates
Self Assessment deadlines
The tax year runs from 6 April to 5 April. A late online return usually triggers an automatic £100 penalty.
5 October
Tell HMRC you need to file if you are newly self-employed or have new income to declare.
31 October
Deadline for paper tax returns.
31 January
Online return deadline, plus any tax owed and the first payment on account.
31 July
Second payment on account, if one applies.
Key dates
What to send us
You won’t need everything — we’ll send a checklist for your situation.
P60, P45, or payslips from any employment
Business income records, invoices, and platform statements
Receipts and statements for business expenses
Mileage log if you use a vehicle for work
CIS statements if you work in construction
Rental statements and mortgage interest figures
Bank interest, dividend vouchers, and pension contributions
Your Unique Taxpayer Reference (UTR) and Gift Aid donations
Sole trader and self-employed accountant
Tax return help for your trade — the same fixed fee.
Every trade has its own records, expenses and pitfalls. Choose yours for practical guidance on what to keep and what to watch.
Uber, private hire, minicab and taxi drivers
Platform income, cash fares, mileage and vehicle costs.
01
Self Assessment for uber, private hire, minicab and taxi drivers
How we help
Records to keep
- Weekly or annual earnings statements from each app, showing fares, tips and service fees
- A daily takings record for cash, card and account work, plus card terminal and app statements
- A mileage log that separates business and private journeys
- Fuel, insurance, servicing and car finance paperwork, plus licence, knowledge and council fee receipts
Potential allowable expenses may include
- Either the simplified mileage rate or a share of actual vehicle costs or capital allowances on the vehicle, adjusted for private use
- PCO, private hire or taxi licence, medical, knowledge and council fees
- Platform service fees and commission, radio circuit or rank rent, card-terminal fees and insurance
- Phone costs in proportion to business use, car cleaning and parking (not fines)
Common mistakes to watch
- Using the gross fare figure without deducting the platform's commission, or deducting it twice
- Claiming 100% of vehicle costs when the car is also used privately
- Estimating cash income at year-end instead of recording it as you go
- Forgetting income from a second app or private hire work
02
Self Assessment for delivery drivers and couriers
How we help
Records to keep
- Earnings summaries from every delivery app or courier firm
- Mileage records for your car, van, motorbike or e-bike
- Receipts for equipment and phone costs
Potential allowable expenses may include
- Mileage allowance or actual vehicle costs, depending on your circumstances
- Thermal bags, helmets, phone holders and similar equipment
- Business share of phone and data costs
- Vehicle insurance for business use
Common mistakes to watch
- Leaving out income from a short spell with another platform
- Claiming everyday clothing, which isn't normally allowable
- Assuming the £1,000 trading allowance and actual expenses can both be claimed
03
Self Assessment for landlords and property income
How we help
Records to keep
- Letting agent statements or your own rent records
- Mortgage interest statements
- Invoices for repairs, insurance, certificates and management fees
Potential allowable expenses may include
- Letting agent and management fees
- Repairs and maintenance (not improvements)
- Landlord insurance, gas and electrical safety certificates
- Replacement of domestic items such as furniture or appliances
Common mistakes to watch
- Deducting mortgage interest in full — for residential lets it's given as a 20% tax credit instead
- Treating an extension or improvement as a repair
- Not splitting income correctly on jointly owned property
04
Self Assessment for iT consultants and IT contractors
How we help
Records to keep
- Invoices and client remittances
- Receipts for laptops, software, certifications and subscriptions
- Travel records for client-site work
Potential allowable expenses may include
- Computer equipment, often through capital allowances
- Software licences, cloud services and professional subscriptions
- Training that updates existing skills
- Travel to temporary workplaces, subject to HMRC's rules
- A proportion of home costs if you work from home
Common mistakes to watch
- Claiming travel to what is really a permanent workplace
- Payment on account surprises in the first year of self-employment
- Not revisiting whether a limited company would suit higher earnings
05
Self Assessment for freelancers and creatives
How we help
Records to keep
- A list of invoices raised and when they were paid
- PayPal, Stripe or platform statements (Fiverr, Upwork)
- Receipts for kit, software and portfolio costs
Potential allowable expenses may include
- Cameras, lenses, lighting and computers
- Creative software such as Adobe subscriptions
- Portfolio websites, hosting and stock licences
- Professional memberships and relevant courses
Common mistakes to watch
- Forgetting income paid through payment platforms
- Mixing a personal hobby and freelance work
- Ignoring foreign client payments or currency conversion
06
Self Assessment for high income earners
How we help
Records to keep
- Your P60 or P45 and any P11D benefits-in-kind statements
- Bank and savings interest statements, including joint accounts
- Child Benefit claim details and your and your partner's adjusted net income figures
Potential allowable expenses may include
- Pension contributions that reduce your adjusted net income
- Gift Aid donations, which can restore some or all of a tapered allowance
- Employment expenses on your P11D, if applicable
Common mistakes to watch
- Not realising that between £100,000 and £125,140 the taper means a marginal rate of 60% on part of your income
- Repaying Child Benefit through a tax charge you never registered for
- Forgetting interest on joint accounts counts as half yours
07
Self Assessment for company directors
How we help
Records to keep
- Your payslips and P60 from the company
- Dividend vouchers for every distribution you took
- P11D for benefits such as a car, medical insurance or home office costs
- Director's loan account records if you borrowed from or lent money to the company
Potential allowable expenses may include
- Expenses paid personally on the company's behalf and reimbursed tax-free
- Professional subscriptions, where allowable
- Costs of preparing your personal return are covered in our fee
Common mistakes to watch
- Taking dividends before the company has enough distributable profits
- Missing dividend vouchers, which makes the income hard to evidence
- An overdrawn director's loan account, which can trigger a s455 charge for the company
08
Self Assessment for investors and capital gains
How we help
Records to keep
- Contract notes and broker statements for every buy and sell
- Crypto exchange transaction history for the full tax year
- Completion statements for property disposals and records of the original purchase price
- Dividend vouchers and interest statements
Potential allowable expenses may include
- The original purchase price and buying costs of each asset
- Improvements to a sold property (not repairs)
- Capital losses, which offset gains in the same or later years
Common mistakes to watch
- Assuming crypto gains aren't taxable — HMRC treats them as chargeable assets
- Applying the wrong share matching rules (same day, then 30 days, then the pool)
- Assuming crypto gains aren't taxable — HMRC treats them as chargeable assets
09
Self Assessment for doctors and locum healthcare professionals
How we help
Records to keep
- P60s and payslips from every NHS or private organisation you worked for
- Locum and private patient invoices and remittances
- GMC, BMA, medical defence union and indemnity fee receipts
- Pension contribution statements, including NHS Pension Scheme figures
Potential allowable expenses may include
- GMC registration and annual retention fees
- Medical defence organisation and indemnity subscriptions
- BMA and other professional memberships
- Mileage between hospitals or clinics, and equipment such as stethoscopes or tablets
Common mistakes to watch
- Declaring locum income paid gross without any tax deducted
- Missing the pension savings tax charge check when NHS contributions are high
- Claiming travel to a single permanent workplace, which isn't allowable
10
Self Assessment for construction trades and CIS subcontractors
Whether you drive for Uber, Bolt, FREE NOW, a local minicab firm or as a licensed black cab and hackney carriage driver, you’re usually treated as self-employed. Platforms pay you after taking their service fee, and taxi work often mixes card payments, cash and account work — so a clear record of every fare and cash taking matters.
How we help
We check every CIS statement against HMRC’s records and prepare your return so tax already deducted is credited correctly — for the fixed £150.
Records to keep
- CIS payment and deduction statements from every contractor
- Receipts for tools, materials and protective equipment
- Van costs and mileage records
Potential allowable expenses may include
- Tools and equipment, including capital allowances on larger items
- Materials you paid for yourself
- Van running costs or mileage, adjusted for private use
- Protective clothing and safety boots
- Trade insurance and CSCS card fees
Common mistakes to watch
- Using the gross fare figure without deducting the platform's commission, or deducting it twice
- Claiming 100% of vehicle costs when the car is also used privately
- Estimating cash income at year-end instead of recording it as you go
- Forgetting income from a second app or private hire work
11
Self Assessment for online sellers and e-commerce
How we help
We review your marketplace figures, establish whether you’re trading, and if you are, prepare your return for the fixed £150.
Records to keep
- Annual sales reports from each marketplace or shop
- Stock purchase invoices
- Postage, packaging and platform fee records
Potential allowable expenses may include
- Cost of stock sold
- Marketplace and payment processing fees
- Postage, packaging and labels
- Photography equipment and listing tools
Common mistakes to watch
- Assuming a marketplace report means you owe tax — it may not
- Forgetting unsold stock at the year-end
- Combining personal clear-out sales with trading income
12
Self Assessment for consultants, coaches and other professionals
How we help
We combine all your income sources into one return, explain the tax on each and file it for £150.
Records to keep
- Your P60 or P45 from any employment
- Client invoices or booking-system reports
- Insurance, accreditation and membership receipts
Potential allowable expenses may include
- Professional indemnity insurance
- Accreditation, registration and membership fees
- Room hire and booking software
- Relevant continuing professional development
Common mistakes to watch
- Underestimating tax because employment income uses up your personal allowance
- Claiming training for a completely new skill
- Missing the 5 October registration deadline in your first year
Self Assessment FAQs
Your questions answered
Clear answers about your return, records, deadlines and the support included.
More questions? See our full FAQ or find your plan.
How much does a Self Assessment accountant cost?
Fees in the UK vary; many accountants charge by the hour. At TX Accountants a Self Assessment tax return is a fixed fee of £150, agreed before we start, with no hidden charges.
What information do I need for my tax return?
Usually your income records, any P60 or P45, expense receipts, and statements for rental income, savings, dividends or pension contributions. We send a checklist tailored to your situation.
What expenses can a sole trader claim?
Costs incurred wholly and exclusively for your business may be allowable — for example equipment, software, business travel, insurance and a share of phone or home costs. What you can claim depends on your circumstances and HMRC’s rules, which we check with you.
When is the Self Assessment deadline?
Online returns and any tax owed are due by 31 January after the tax year ends on 5 April. Paper returns are due by 31 October. If you need to register for the first time, tell HMRC by 5 October.
Do I need an accountant for Self Assessment?
You don’t have to use one, but an accountant can check that your figures are right, that you’ve considered the expenses and reliefs available, and that your payments on account are understood.
Can you help if my records are incomplete?
Yes. Send what you have and we’ll tell you what’s missing and how to rebuild it — for example from bank statements or platform reports.
Can you prepare a tax return for an Uber or taxi driver?
Yes. We prepare returns for Uber, private hire and taxi drivers, including reconciling platform statements and working out vehicle costs or mileage.
Can you help landlords with Self Assessment?
Yes. We prepare the property pages of your return, including allowable expenses and the finance cost restriction on mortgage interest.
Can you help if I have more than one source of income?
Yes. Many clients combine employment, self-employment, rental income or dividends. We bring everything together in one return.
How do I know whether I need to file a tax return?
Can you deal with HMRC on my behalf?
Yes. Once you authorise us as your agent, we can file your return and deal with HMRC about it.
How long does preparation normally take?
Once we have complete records, most returns are prepared within a few working days. Send your information early, especially before January.
Will I have to make payments on account?
If your tax bill is over £1,000 and less than 80% of your tax was collected at source, HMRC usually asks for advance payments on 31 January and 31 July. We calculate and explain them.
Does Making Tax Digital affect me?
From April 2026, sole traders and landlords with qualifying income over £50,000 must keep digital records and send quarterly updates, with lower thresholds following. We’ll tell you if and when it applies to you.
Enquire about Self Assessment