Personal
Personal budget workbook
Track income, fixed costs, and discretionary spend with monthly rollups.
Coming soonNorthline
Finance tools that bring clarity to every decision
Estimate UK Income Tax, National Insurance and Self Assessment bills with transparent calculators and plain-English guides.
Calculators
Featured calculators
Fast, transparent models for everyday money decisions — no spreadsheet gymnastics required.
Income Tax Calculator
Estimate UK Income Tax and National Insurance for the 2026/27 tax year, with optional pension contributions.
Open calculatorDirector Salary & Dividends
Model salary, dividends, Corporation Tax and director National Insurance when extracting profits from a limited company.
Open calculatorSelf-Employed Tax
Turn sole trader turnover and expenses into Income Tax, Class 4 and Class 2 National Insurance and your Self Assessment bill.
Open calculatorNet to Gross Salary
Find the gross salary needed for a target take-home pay, including tax, NI, pensions and employer cost.
Open calculatorTemplates
Featured templates
Ready-to-use frameworks you can customise for planning, reporting, and stakeholder updates.
Startup
Startup runway model
Forecast burn, hiring, and cash runway with scenario toggles built in.
Coming soonBusiness
Board pack summary
A clean one-pager for KPIs, variance notes, and next-quarter priorities.
Coming soon