Tag
self-employed
3 tools — updated for the 2026/27 tax year
- National Insurance Calculator
Class 1, 2, and 4 NI — for employees and the self-employed.
NI & self-employment - Working from Home Calculator (Simplified)
HMRC flat-rate home working allowance: 25–50 hrs/mo = £10, 51–100 = £18, 101+ = £26.
Self-employment - Use of Home as Office Calculator
Apportionment method — room fraction × time fraction × running costs. Often gives a larger deduction than flat rates.
Self-employment
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