Free tools
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Self-Assessment Estimator
VAT Calculator
Using the VAT domestic reverse charge (for example, CIS construction services)? You don't charge VAT on your invoice — your customer accounts for it instead. This calculator assumes standard VAT rules apply.
These calculators give a simplified estimate for England & NI rates and don't account for every allowance, relief or circumstance. They're a starting point, not tax advice — book a free chat for figures you can rely on.