If you’re running a construction business, you know the drill: the work never stops, but neither does the paperwork. We’re officially approaching the February CIS deadline, and if you've made payments to subcontractors between 6 January and 5 February 2026, there’s a date you need to circle in red: 19 February.

Missing this isn't just a "slap on the wrist"—HMRC starts the clock on penalties at £100 from day one, even if you don't actually owe any tax.

Here is everything you need to know to stay in the clear this month.

What exactly is a CIS Return?

Think of your CIS return as your monthly "check-in" with HMRC. It’s your way of proving that you've deducted the right amount of tax from your subs and that you’ve double-checked their employment status.

Pro Tip: Even if you didn't pay a single sub this month, you still have to file what’s called a "nil return." If you don't, HMRC assumes you've just forgotten, and the fines will start rolling in.

Your February 2026 Checklist

To file a perfect return, you need three main ingredients:

1. The Paper Trail: Total gross payments made to every sub.

2. The Math: Ensure you applied the correct deduction—20% for the registered pros, 30% for those not yet registered, and 0% for those with gross payment status.

3. The "ID" Check: You must include the verification numbers for every subcontractor you paid.

Why 19 February Matters (The Cost of Being Late)

HMRC doesn't do "fashionably late." Here’s how the penalties stack up:

• 1 Day Late: An automatic £100 fine.
• 2 Months Late: Another £200.
• 6 Months Late: £300 (or 5% of the tax due, whichever is higher).

These costs eat directly into your project margins. It’s essentially "dead money" that could have stayed in your business.

How TaxVatReturn Takes the Weight Off Your Shoulders

Let’s be honest: you didn't get into construction to spend your evenings wrestling with HMRC portals and deduction calculations. That’s where we come in.

At TaxVatReturn, we act as the "back office" for growing UK contractors. We handle:

• Verification: We’ll check your subs for you so you know exactly what to deduct.

• Submissions: We ensure your returns are filed accurately and—most importantly—on time.

• Full Compliance: From VAT to Payroll, we make sure your tax game is as solid as your builds.

Frequently Asked Questions (FAQs) About CIS Returns

1. When is the CIS return deadline for contractors?

CIS returns must be submitted by the 19th of every month following the end of the tax month (which runs from the 6th to the 5th). For example, payments made between 6 January and 5 February must be reported by 19 February.

2. Do I need to submit a CIS return if I made no payments?

Yes. Even if you did not pay any subcontractors during the month, you must submit a nil CIS return to avoid penalties.

3. Can I correct a mistake on a CIS return?

Yes. If you discover an error after submission, you can amend the CIS return. It is advisable to correct mistakes promptly to reduce the risk of penalties or investigations.

Final Thoughts

The February 19th deadline is a hurdle, but it doesn't have to be a headache. Staying organised protects your cash flow and keeps your reputation with HMRC spotless.

Need a hand getting your February return sorted? Don't wait until the 18th to start worrying. Reach out to the team at TaxVatReturn today, and let’s get your compliance handled.

Email: info@taxvatreturn.co.uk

Call: 01284 332375