HMRC Updates
Income Tax: Personal allowance frozen at £12,570 CGT: Annual exempt amount is £3,000 NICs: Main Class 1 Employee NI rate reduced VAT: MTD system requirements fully enforced SDLT: First-time buyer relief threshold £425,000 Corporation Tax: Main rate 25% for profits over £250k IHT: Nil-rate band frozen at £325,000 Pension: Annual allowance set at £60,000
Estimated calculation • • uktaxhero.com
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Important: Illustrative estimates based on HMRC published rates. Actual liabilities vary. Find a Tax Expert →
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How This Calculator Works

⏱ Days Late

Calculates from a due date or days late input to show how penalties escalate over time.

📋 All Penalty Types

Covers Self Assessment filing and payment penalties, VAT penalties and PAYE late payment charges.

💰 HMRC Interest

Includes estimated HMRC late payment interest at the current rate (Bank Rate + 2.5%).

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Frequently Asked Questions

What are the Self Assessment filing penalties?

Day 1 late: £100. 3 months late: £10/day for up to 90 days. 6 months late: £300 or 5% of tax (whichever higher). 12 months late: a further £300 or 5%.

Can HMRC penalties be appealed?

Yes. HMRC can cancel penalties if you have a "reasonable excuse" (e.g. serious illness, bereavement, postal failure). Disagree with a penalty using SA370 or by calling HMRC. Professional help significantly improves appeal success rates.