Solebiz Hub
Less admin. More doing.

Your business,
simplified.

Practical online tools to help UK sole traders and freelancers stay organised, understand their numbers and spend less time on admin.

Try the free profit calculator →
Business overview
Monthly income£3,240
Expenses£860

Monthly activity

Illustrative figures only
The toolkit

Everyday business admin, made easier

Start with the essentials. Add more useful tools as the platform grows.

£ Profit calculator

See what remains after your business costs.

Tax estimator

Plan ahead with an indicative tax estimate.

Invoice generator

Create clear, professional customer invoices.

Income & expenses

Keep a simple record of money coming in and going out.

Free tool · First release

Business profit calculator

Enter monthly figures to estimate operating profit. No account needed.

Sales or fees received before expenses.
Materials, software, travel and running costs.
Any other costs you want to include.
Choose a whole number from 1 to 12.
Monthly profit£2,380.00
Profit margin73.5%
Projected profit£28,560.00

Basic estimate before tax, National Insurance, VAT and finance costs not entered above.

Simple by design

Built around the way you work

01 / ENTER

Add your figures

Enter your income and business costs.

02 / REVIEW

See the estimate

Monthly profit, margin and projected profit update automatically.

03 / PLAN

Make informed decisions

Use the result as a planning aid, not a substitute for accounts.

Free tool · 2026/27 tax year

UK self-employed tax estimator

Estimate Income Tax and Class 4 National Insurance using your annual figures.

Your business turnover before allowable expenses.
Enter allowable costs only. This gives estimated trading profit.
For example, gross employment or pension income before tax.
Scottish non-savings income tax bands are different.
Trading profit£34,000.00
Estimated Income Tax*£4,286.00
Estimated Class 4 NI£1,285.80
Estimated amount after Income Tax and Class 4 NI£28,428.20

Illustrative estimate for 2026/27. Assumes standard Personal Allowance and no other reliefs or adjustments.

*Income Tax is estimated on your combined entered income, not just the tax on your business. It does not subtract PAYE or other tax already paid. Class 4 NI is estimated on trading profit only. The estimate excludes student loan repayments, pension and Gift Aid adjustments, benefits, other reliefs, payments on account, VAT and voluntary Class 2 NI.

Free tool · Invoice builder

Professional invoice generator

Create an invoice for your customer, calculate totals automatically and print or save it as a PDF.

Your business details

Customer details

Items or services

DescriptionQtyUnit price (£)

Tip: In the print window, choose “Save as PDF” as the printer destination. Your entries are used in this browser only and are not uploaded.

Solebiz Hub · Invoice

Your Business

INVOICE
Invoice no: SH-0001
Invoice date: 5 November 2026
Due date: 19 November 2026

Bill to

Customer name

Payment terms

Payment due by 19 November 2026
DescriptionQtyUnit priceAmount
Subtotal£0.00
VAT (0%)£0.00
Total due£0.00
Payment details
Add payment details above if required.
Thank you for your business.

This tool creates a basic invoice document. It does not check VAT registration, determine whether VAT should be charged, issue legally compliant sequential invoice numbers, send invoices, or keep accounting records. Check your details and applicable HMRC requirements before sending.

Make room for the work that matters.

Solebiz Hub is being built for UK sole traders and freelancers.

Try the calculator