UK sole traders, freelancers and contractors who want to know the real amount to set aside for the tax year, not a flat guess.
Cómo funciona
- Name this budget, e.g. "Tax year 2026/27".
- Enter your expected self-employed profit for the tax year in pounds.
- Read Income Tax and Class 4 NI separately, the combined total, and the monthly set-aside figure.
- The budget stays saved; recalculating it updates the same entry.
Qué obtienes
- Income Tax at the real 2026/27 marginal bands (0% to £12,570, 20% to £50,270, 40% to £125,140, 45% above) - the top band applies only to the excess, not the whole profit
- Class 4 National Insurance (6% between £12,570-£50,270, 2% above) - the charge most freelancers forget to set aside for at all
- Personal Allowance taper above £100,000 - £1 of allowance lost per £2 of profit over £100,000, gone entirely by £125,140 (the '60% trap')
- Shows Income-Tax-only vs the real Income-Tax-plus-NI total side by side, in pounds
Captura de pantalla

Detalles técnicos
Como configurar y usar
- Compra la licencia — tu clave (lic_...) aparece en la pagina del pedido y en tu correo.
- Inicia sesion en app.synoriaai.com con tu clave de licencia.
- Sin instalacion — el producto funciona en el navegador, en tu instancia aislada.
- 1. Open the UKTaxBudget page.
- 2. Enter a name for your budget (e.g., 'Tax year 2026/27') in the 'Budget name' field.
- 3. Enter your expected annual profit (after expenses) in the 'Annual profit' field.
- 4. Click the 'Calculate' button.
- 5. View your results: Income Tax, National Insurance, total tax, and the monthly set-aside amount. Your budget is saved under the name you provided.
Preguntas frecuentes
Is my financial data safe?
Yes, all calculations are done in your browser. We do not store or transmit your profit or budget data to any server.
Does this tool account for the Personal Allowance taper?
Yes, it automatically reduces your Personal Allowance by £1 for every £2 of profit over £100,000, and removes it entirely above £125,140, showing the '60% trap' effect.
Does it include Class 4 National Insurance?
Yes, it calculates Class 4 NI at 6% between £12,570 and £50,270, and 2% above, and shows it separately from Income Tax.
Productos relacionados

Ledger & Trial Balance Practice Tool
Commerce students in Class 10-12 need to practice journal entries and see how they flow into ledgers, trial balances, and balance sheets for board exams. This tool lets them enter transactions and instantly see the…

KASA - Serbest Çalışanlar İçin Zarf Bütçesi
Serbest çalışanlar düzensiz gelirlerini vergi, kira ve yaşam giderleri gibi zarflara bölerek bütçelerini düzenli tutabilir. Her harcamayı tarih ve not ile ilgili zarfa işleyerek ne kadar ayırdığını ve ne kadar…

Calculadora de Orçamento por Envelopes (Pix)
Este aplicativo ajuda brasileiros a organizar seu dinheiro em envelopes de orçamento, como alimentação, transporte e lazer, sem precisar conectar uma conta bancária. Ele resolve o problema de controlar gastos do dia a…

Council Tax Envelope Budget
This app helps UK residents verify they are paying the correct council tax amount for their property band by calculating it from their council's published Band D rate. It then provides a simple envelope-based budgeting…