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CIS Tax Rebate Calculator​

If you’re a construction worker, plumber, joiner, groundworker or any type of trade under the Construction Industry Scheme (CIS), you might be owed some money back. Many contractors and subcontractors pay more tax than they should, and that’s why it’s important to check if you’re due a CIS tax rebate.

Calculate your CIS tax rebate

We’ve built this easy-to-use CIS tax rebate calculator to help you figure out how much you could be refunded. It only takes a couple of minutes, and it’s a great first step towards claiming what’s yours.

1 Step 1 2 Step 2 3 Step 3 4 Step 4 5 Step 5

Select tax year

What is your employment status working in Construction?

Even though you’re not a self-employed construction worker, you still could be entitled to a tax rebate if you’re out of pocket on work-related expenses. Click the button below to answer a few simple questions to find out if you could have a claim.

Start now >

How much was your annual pay before tax?

£
please enter a value

How much are your annual expenses?

£
please enter a value

Are you registered for CIS?

Estimated Taxes Paid

£XXX

CIS Deductions

£XXX

Approximate Refund Due

£XXX

Looks like your contractor did not deduct CIS from your pay. In this case you’re likely not due a refund but we recommend to check with your contractor. In most cases, if you’re registered under the CIS scheme, you have your CIS tax deducted so you can claim some of it back. If you're not sure, get in touch to see how we can help. 

Contact RIFT

Why you could be owed a CIS tax rebate

Under the CIS (Construction Industry Scheme), contractors take 20% of your pay for tax before it even hits your account. But here’s the thing — there’s a good chance you’ve been taxed more than you owe.

Why? Well, it could be due to how you’ve registered for CIS or because you’ve been covering work expenses out of your own pocket.

Many people working in construction don’t realise they can claim back for expenses like tools, travel, or meals when working away from home.

Bought your own gear? Driven to different sites in your own vehicle? Stayed overnight on a job? These kinds of costs can reduce how much your income is taxed.

Beyond simply getting some cash back, checking if you’re eligible for a CIS tax rebate means you’re not paying more tax than you need to. These expenses can make a big difference in your net take-home pay, and many workers miss out because they’re not aware they’re eligible to receive a refund.

So, don’t leave money on the table. If you’ve spent your own money to do your job, it could be due back to you. Our calculator is the easiest way to find out how much you’re owed.

How to use our CIS tax rebate calculator

Just answer a few quick questions and we’ll tell you how tax much you could claim back. We’ll need to know:

  • Are you ‘on the books’ or self-employed?
    This tells us how your tax is paid, either through PAYE or Self Assessment.
  • How much did you earn in the tax year you’re claiming for, before tax?
    This will allow us to work out what you’re owed back in your CIS rebate claim.
  • Have you already signed up for CIS?
    The scheme covers most of UK construction. If you’re not registered you could see your CIS deductions rocket up to a whopping 30%!

How can RIFT help

Sorting out your CIS tax rebate can be a bit of a headache, but that’s where we come in. At RIFT, we’ve been helping construction contractors and subcontractors claim their tax rebates for almost 25 years. 96% of our CIS customers recommend us. We handle the whole process for you — making sure everything’s done right, so you get back the money you’re entitled to. 

When you work with us, you get:

  • Your Self Assessment tax return sorted.
  • Support throughout the year, not just at tax time.
  • A fixed fee with no hidden costs or hourly rate and everything is covered by our unique RIFT Guarantee.

With RIFT, you won’t miss any expenses you’re eligible to receive, and there’s no need to worry about mistakes holding up your claim. We’ll deal with HMRC for you, so you can get on with the job. 

Try our CIS tax rebate calculator today, and if you’ve got questions, we’re always here to help. 

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