"Swift and professional service. Would recommend for CIS Construction workers"
Andrew
Trustpilot
Your CIS deductions deserve a proper look. We’ll find what you’re owed
Send us your CIS statements. A UK accountant works out what you’re owed and files it. You just approve.
First time filing? You're in safe hands.
"Swift and professional service. Would recommend for CIS Construction workers"
Andrew
Trustpilot
Why Taxfix?
Qualified accountants
UK-based, ACCA, CIMA, or CTA accredited, with 5+ years’ experience.
Accuracy Guarantee
Your return filed right, or we fix it at no extra cost. T&Cs apply.
Rated by thousands
4.8/5 stars from 7,000+ UK reviews on Trustpilot
Who can we help
We can help everybody that needs to file a tax return: first-time filers, self-employed, freelancers & contractors investors, construction workers, high earners (£100K+), landlords (inc. Airbnb hosts), expats, couriers, drivers and many more.
How it works
HMRC don't make it easy. We do. Here's how three simple steps get your first Self Assessment done and dusted.
01
Answer a few simple questions
And we mean a few. After a couple of minutes of answering questions online we’ll have everything we need to start preparing your tax return.
02
Find the right plan for you
Select the support that fits your needs – from basic accurate filing to full HMRC defense and ongoing tax optimisation throughout the year.
03
Meet your accountant
Meet your dedicated accountant who takes over from here – checking accuracy, maximising deductions, and filing with HMRC. You’re in expert hands.
Who’s my accountant?
Each accountant is vetted before they can join our superstar community. Most own their own practice, all have 5+ years industry experience.
100% UK-based accounting community
A hand-vetted group of ~150 practitioners
Rated 4.8* out of 5 from 7k+ reviews
Accredited by the major UK accounting bodies
Regular quality audits to maintain a gold standard
Plans to fit your needs
All plans include accurate filing. Up to 40% off for new customers when purchasing an annual plan. T&Cs apply.
Save £70
Prepared & Filed Accurately
£169
Expert sign off included, so you know it’s right
Get startedAccountant prepares & files your Self Assessment
Accuracy Guarantee
Message your accountant during filing
If your situation is straightforward, this is enough.
Save £100
Filed, Optimised & Protected
£249
We find what you’re owed, and protect you if HMRC asks questions
Get startedEverything in Prepared & Filed Accurately
Deduction & relief optimisation + strategic tax-planning call
Full HMRC protection (audit + letter support)
Most filers choose this – if you’d rather not leave money on the table.
Save £150
Filed + a Year-Round Tax Partner
£499
An accountant on retainer, helping you stay on top of your tax position all year
Get startedEverything in Filed, Optimised & Protected
Year-round access to your accountant
Annual tax efficiency review
HMRC agent representation
If your situation is more complex, or you want year-round accountant support.
| Prepared & Filed Accurately | Filed, Optimised & Protected | Filed + a Year-Round Tax Partner | |
|---|---|---|---|
| Price | £99 | £149 | £349 |
| Accountant prepares and files your return | |||
| Accuracy Guarantee | |||
| HMRC integration | |||
| Tax optimisation, delivered through a consultation call with your accountant | |||
| HMRC audit & letter support | |||
| UTR Registration | |||
| Year-round accountant access & annual tax efficiency review | |||
| HMRC agent representation | |||
| Accountant access | Messaging while filing your return | Messaging on anything related to your return + consultation call | Year-round messaging and scheduled calls, any tax topic |
Prepared & Filed Accurately
Filed, Optimised & Protected
Filed + a Year-Round Tax Partner
Price
£99
£149
£349
Accountant prepares and files your return
Accuracy Guarantee
HMRC integration
Tax optimisation, delivered through a consultation call with your accountant
HMRC audit & letter support
UTR Registration
Year-round accountant access & annual tax efficiency review
HMRC agent representation
Accountant access
Messaging while filing your return
Messaging on anything related to your return + consultation call
Year-round messaging and scheduled calls, any tax topic
Here’s everything that’s included
All of our tax return services are filed by a UK-accredited accountant and covered by our Accuracy Guarantee.
See what you might have missed
Upload a previous year’s tax return and find out where you could have saved money.
Start now
Still have questions?
Here are some common questions we've gotten from first-time filers like you.
What you need to do:
- Register for HMRC’s online service and enrol for self-employment
- You’ll get your Government Gateway ID (by email) and your UTD number (by post)
- Register for CIS at HMRC’s website using your Government Gateway ID
- Choose your CIS payment status - net pay or gross pay
- You’re done!
If you don’t register for CIS, your contractor will send 30% of your pay to HMRC instead of 20%
There are a ton of CIS deductions you can use to increase your rebate:
- Mileage
- Parking and tolls
- Tools (and their cleaning and repair)
- Protective clothing and gear
- Public Liability Insurance
- Phone bills
- Home office - rent, stationary, postage
- Professional membershipsw
- Accountancy fees (including Taxfix!)
One important thing to keep in mind: if your expenses are under £1,000, don’t bother with them - just claim £1,000 as a flat, tax-free allowance. All self-employed people can use it.
You can claim your transport in one of these two ways:
Do you use your car for work 75% of the time? Then you can claim 75% of leasing, fuel, car insurance, road tax, etc. Pretty good if you bought the van just for work.
Or, you can simply use HMRC’s simplified expense rate called “the mileage allowance“: it starts at 45p a mile. Better if you owned the van already and if you drive for work often.
The only things we need from you are:
- CIS payslips from your contractor
- Any receipts related to expenses that you want to claim
- Your UTR (Unique Taxpayer Reference) number