No hidden costs or nasty surprises.

There is no catch and your data is not sold to anyone. We are committed to giving you the power to do your own taxes and take control of your finances.

The Simple Self Assessment Calculator & Submission Tool

Your security,
 our priority.

Your trust is a privilege and a responsibility. It is our first priority, every day. SimpleTax is protected by the same 256-bit secure connections and systems used by online banking standards, ensuring your information is transmitted and stored securely. 

Over 60,000 taxpayers signed up

“This blew my mind – what you’re basically saying is I could be replaced by a piece of software"

"SimpleTax gives the Inland Revenue a lesson in interface design."

Get StartedGet Started

Support who care

We've invested heavily in our support team, and the tools they use to support our customers. Our helpdesk isn't hidden behind a customer login, and we publish our satisfaction ratings. Over the past 100 support tickets where our customers left feedback, here's how we've done:



With the HMRC moving away from its own submission tool we are working closely with them to have smooth transition into the digital age and ensuring Making Tax Digital is as simple as possible for our contractors

How GoSimpleTax gives you peace of mind

GoSimpleTax does hundreds of double-checks and points out tax savings you qualify for, ensuring you file an accurate tax return At the end, get HMRC's IRMark confirmation delivered to your inbox.

As a contractor what benefits will I see from GoSimpleTax?

Calculate now

Just enter your email address with a password to keep your tax info secure

It will do the Income Tax Calculations for you

Calculates your liability  as you go (MTD Ready)

Gives hints and tips on Tax savings

Does all schedules including partnerships

No hidden costs

Scan receipts and Invoices  - no lost receipts

"I think it is brilliant. I always found Sage too complicated but this makes everything so simple with tremendous support with all questions answered. It was easy to sign into and simple to use."
 G H, Overseas User

"Thanks for the information... the software looks very good to me. Also, a new year gives me the opportunity to say how impressed I have been with all aspects of the services you provide and for the values you have set yourselves"
 J C, Aberdeen

“...Thank God for services like yours"
Mr W, Glastonbury

"...very delighted with the remarkable service. We are extremely impressed by the presentation of figures, breakdowns & calculations... We will of course recommend it to our friends."
 Mr & Mrs G H, London

"...I just wanted to let you know that this system really works for me. I was struggling endlessly with my last package so this is a breath of fresh air. Very straightforward and useable. Thanks again"
 Glyn, Dorset

Copyright © GoSimpleTax.  All rights Reserved.

 Renewal pricing as per discount offer and subject to change.

* Excluding Lloyds and Members of Parliament.

GoSimpleBooks - Jargon free bookkeeping  - calculates VAT as you go --- MTD Ready


Self Assessment Software for Contractors - GoSimpleTax

Maximise your take-home pay whilst being 100% compliant. Guarantee accuracy ad tax efficiency with Self Assessment software for contractors.



Non subscription: £77.00

*Prices include VAT

Tax Return

Submit Directly to HMRC

View Tax Calculation

Print your Tax Calculation

Download Form R40

Mobile App

Scan Receipts

Self Assessment Categorisation

Basic Tax Return (SA100)

Employment (SA102)

Self Employment (SA103)

Partnership (SA104)

Property (SA105)

Ministers of Religion (SA102M)

Foreign (SA106)

Trusts (SA107)

Capital Gains (SA108)

Residency (SA109)





Xero (beta)

Free Trial



Non subscription: £77.00

*Prices include VAT

SA800 Partnerships

Submit Directly to HMRC

Partnership Tax Return (SA800)

Property Income (SA801)

Foreign Income (SA802)

Disposal of Assets (SA803)

Investments Income (SA804)

Auto populate partner’s SA104

Add partners at anytime

Free Trial

Tax Return

Volume Discount

Non subscription: From £115.00

*Prices include VAT

Multiple Return Discount

2 Returns - £69.00

3 Returns - £92.00

4 Returns - £112.00

5 Returns - £125.00

6 Returns - £140.00

7 Returns - £148.00

8 Returns - £156.00

9 Returns - £158.00

10 Returns - £160.00

Additional Returns £1 Each

Free Trial