Report Period
Total Income
£29,130
1 categories
Total Expenses
£12,690
6 categories
Net Profit / Loss
£16,440
Profit
Taxable Income
£16,440
Net (never below zero)
Self Assessment (SA103) breakdown
Your categories mapped straight onto HMRC's self-employment boxes. Type into any box to override the calculated figure, or change a mapping below — all totals update.
Business income
Turnover (business income) Box 15 | |
Any other business income Box 16 |
Allowable expenses
Cost of goods bought for resale Box 17 | |
Construction industry subcontractor costs Box 18 | |
Wages, salaries and other staff costs Box 19 | |
Car, van and travel expenses Box 20 | |
Rent, rates, power and insurance Box 21 | |
Repairs and renewals of property/equipment Box 22 | |
Phone, fax, stationery and other office costs Box 23 | |
Advertising and business entertainment Box 24 | |
Interest and bank/credit card charges Box 25/26 | |
Professional fees (legal, accountancy) Box 27 | |
Other business expenses Box 30 |
Net profit (income − expenses)
£17,020
Capital allowances (equipment, vehicles, tools)
Box 49–59 · claimed separately from expenses
Taxable profit after allowances
£16,440
Category → HMRC box mapping
Job Income
Income · £29,130
Materials
Expense · £7,060
Subcontractors
Expense · £2,550
Vehicle & Fuel
Expense · £1,015
Insurance
Expense · £780
Accountancy & Admin
Expense · £705
Tools & Equipment
Expense · £580
Estimated tax due
Based on a taxable profit of £16,440 using 2025/26 UK rates.
Income tax
£774
On £3,870 taxable
National Insurance
£232.2
Class 4 contributions
Allowance used
£12,570
Personal allowance
Total tax due
£1,006.2
Effective rate 6.12%
Band breakdown
Estimate only — it assumes this business is your only income and ignores credits, other deductions and local taxes. Confirm figures with HMRC or your accountant.
National Insurance estimate
Based on a taxable profit of £16,440 using 2025/26 self-employed rates.
Class 4 NI
£232.2
6% on £3,870 + 2% on £0
Class 2 NI
£0
Not payable — contributions are credited automatically at this profit level
Total NI due
£232.2
Payable with your Self Assessment bill
Estimate only — thresholds and rates can change, and this excludes Income Tax. Check figures with HMRC or your accountant.
CIS Deducted at Source
(tax already paid on your behalf)Gross invoiced under CIS
£2,634.48
CIS deducted
£140.8
Net received
£2,361.96
VAT Summary
(for this period)VAT on Sales
£4,854.99
VAT on Purchases
£1,559.99
Net VAT
£3,295
Income by Category
Job Income
8 transactions
£29,130
VAT: £4,854.99
Expenses by Category
Materials
6 transactions
£7,060
VAT: £1,176.66
Subcontractors
2 transactions
£2,550
Vehicle & Fuel
4 transactions
£1,015
VAT: £169.17
Insurance
1 transactions
£780
Accountancy & Admin
2 transactions
£705
VAT: £117.5
Tools & Equipment
2 transactions
£580
VAT: £96.66