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.

Build UK is working with GoSimpleTax and has agreed a 25% discount for its members and  their contractors, just use voucher code BUILDUK18 and you can calculate and submit to HMRC 

The Simple Self Assessment Calculator

Looking for bigger savings?
GoSimpleTax knows what expenses are allowed, in your specific case. We analyse your tax return and make personalised recommendations on tax savings you qualify for.

Your security,
 our priority.

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

As a contractor what benefits will I see from GoSimpleTax?

Does the Income Tax Calculations for you

Gives hints and tips on Tax savings

Yes - Just put your income and expenses in and in does the calculations for you - giving tips on saving as you go

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


£15.00Per tax year

Basic investment income

Mobile App

Sign Up!

£25.00 per tax year

Sign Up!


£36.00 Per Tax Year

Submit Directly to HMRC
View Tax Calculation
 Print your Tax Calculation

Download Form R40
Basic Tax Return (SA100)
Employment (SA102)
Self Employment (SA103)
Partnership (SA104)
Property (SA105)
Foreign (SA106)
Trusts (SA107)
Capital Gains (SA108)
Residency (SA109)
Mobile App
Self Assessment Categorisation

£60.00 per tax year

Directly to HMRC
View Tax Ca
Print your Tax Calculation
Download Form R40
Basic Tax Return (SA100)
Employment (SA102)
Self Employment (SA103)
Partnership (SA104)
Property (SA105)
Foreign (SA106)
Mobile App
Self Assessment Categorisation

Sign Up!


£30.00 per tax year

£50.00 per tax year





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

Calculate now

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.

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

Calculates your liability  as you go (MTD Ready)

Does all schedules including partnerships

Scan receipts and Invoices  - no lost receipts

No hidden costs

As a Director can I put my dividend income through GoSimpleTax?

Yes of course, GoSimpleTax does all the Tax schedules needed by HMRC. Giving hints and tips along the way on tax savings

I also have property income can GoSimpleTax help with this?

Is GoSimpleTax Secure?

Yes it is protected by the same 256 bit secure connections and systems used for online banking.

"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

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GoSimpleTax is registered at the Information Commissioner’s Office (Reg. No. ZA120006).
GoSimpleTax is a trading style of GoSimple Software Limited, with registered office at 2 Cromwell Court, Oldham, OL1 1ET, United Kingdom.

© 2018 GoSimple Software Limited.

All pricing inc VAT. SimpleTax SRP £60 per return.
 Renewal pricing as per discount offer and subject to change.

* Excluding Lloyds and Members of Parliament.