The UK's leading contractor site. 200,000 monthly unique visitors.

IR35 Testing

How much can you earn contracting?

  • What is your net income after taxes?
  • What rate will earn your desired income?
  • What rate earns the same as permanent?


Enter your hourly rate & find out more:


Permanent Employees

Enter your gross salary & find out more:


Contractor Latest

HMRC edges closer to private sector ‘Off-Payroll’ rollout with IR35 consultation

HMRC’s IR35 consultation has been released, suggesting an extension of the public sector ‘Off-Payroll’ rules is a done deal in the taxman’s eyes.


IR35 BREAKING NEWS: Consultation is launched

The long awaited IR35 consultation for 'off-payroll' working in the private sector has been published by HMRC today.


IR35 case – Jensal Software Ltd v HMRC: full analysis

HMRC’s understanding of IR35 has been called into question following a conclusive victory for a contractor at a recent IR35 tribunal.


IT contractor defeats HMRC in decisive fashion in latest IR35 case

An IT contractor has overcome the taxman in an IR35 tribunal case which will raise serious question marks over HMRC and CEST.


BBC presenters fighting IR35: the final day in court

Three BBC presenters challenged their IR35 status and a substantial tax bill at a significant employment tribunal which concluded last Friday.


Negotiation for contractors

Learning how to negotiate well will ensure you secure interviews and contracts at the top rates.

|Contractor Sales

Counting the true cost of a contractor umbrella company – contractor checklist

Contractors can use Contractor Calculator’s checklist to spot the hidden costs in advertised umbrella company fees.

|Contractor umbrellas companies

Other Contracting News

Health warning as staff face bills for back tax

With HMRC chasing millions in lost revenue, doctors and nurses have been told to check their pay history.

Sun, 20 May 2018 - Tax Issues

MP targets 'immoral' HMRC over 'retrospective' taxation of contractors

The scheme users, many of whom could be locum doctors or nurses, or IT contractors, say they were led into the arrangements by accountants they trusted.

Thu, 17 May 2018 - Tax Issues

FCSA calls on Unite to educate itself on benefits of compliant umbrella firms

Julia Kermode is calling for the union to educate itself about the benefits workers gain by choosing to work through compliant umbrella companies.

Mon, 14 May 2018 - Public Sector IR35 Reforms

PRISM Hosts Round Table Discussion on Modern Employment

The event had people from ACCA, APSCo, CBI, CIPD, CIPP, CIOT, ICAEW, IOD, IFS, Law Society,LITRGand University of Oxford. Also BEIS, HMRC, HM Treasury, and the OTS.

Fri, 11 May 2018 - Tax Issues

Found something to share with us? Let us know! More

Popular Calculators

How much do you want to earn? We'll tell you how

Enter your target annual income and let contractor calculator work out how you can achieve it:

Quick Calculator Finder

Can't find the contractor calculator you're looking for? Try using the finder below

Financial services


  • Based on contract multiples
  • Competitive rates
  • Fast service
Find out more


  • Incredibly tax efficient
  • Paid for out of gross fees
  • Flexible options
Find out more

Income Protection

  • Income when too ill to work
  • Premiums are tax deductible
  • Work with peace of mind
Find out more

Life Insurance

  • Protect loved ones
  • Tax deductible
  • Death in service benefits
Find out more

Recent Media Coverage

Staffing Industry News

UK – HMRC IR35 consultation for the private sector to hit end users and staffing firms

HMRC to consult on rolling out IR35 reforms into the private sector

IT Pro

IR35 news: IT contractor successfully appeals HMRC IR35 claim

IT contractor takes on HMRC and wins in latest IR35 case

Accounting Web

Government rolls out off-payroll private sector consultation

Consultation announced into private sector roll-out of IR35 reforms

Computer Weekly

Ex-DWP IT contractor wins IR35 case appeal against HMRC

A court has dismissed HM Revenue & Customs (HMRC) demands for £26,000 in payment from a public sector IT contractor it claimed had fallen foul of the IR35 tax avoidance rules.

The Guardian

When attitude trumps experience – lessons on hiring your first employee

Some do's and don'ts on hiring your first employee

Also Featured In