Start Sharp

Your Start Sharp Toolkit

Everything you need to run the numbers and set your business up properly — built to work on any phone, tablet or computer. Tap a tool to open it.

Your tools

Sole Trader Tax Companion

Estimate your Income Tax, National Insurance and student loan — and exactly what to set aside for HMRC.

Limited Company Tax Companion

Corporation Tax, dividend & salary tax and take-home — with dividend and director’s-loan trackers.

MTD Readiness Toolkit

Are you caught by Making Tax Digital for Income Tax? Check in seconds, with deadlines and software guidance.

Business Startup Toolkit

Sole trader vs limited company, step-by-step setup checklists and a startup cost & cashflow planner.

Tip: bookmark this page so your toolkit is always one tap away. Your figures stay private on your own device — nothing you type is sent anywhere.

Estimation tools — a guide, not tax advice.
© Start Sharp 2026