Interest rates
Set the rate assumptions in bluprnts — interest earned on cash, charged on overdraft, plus annual inflation and depreciation — applied across the forecast.
The Rates section holds the assumptions the engine applies as it projects forward: the interest your bank balance earns or costs, and how prices and asset values drift over the years. Most businesses set these once.
Open the Rates settings#
In the left sidebar, select your company name at the bottom to open Company options, then choose Rates. Changes save automatically.


Interest#
- Cash interest rate — interest earned on a positive bank balance, added as income each month. Leave it at 0 if your account pays nothing.
- Overdraft interest rate — interest charged whenever the balance goes negative. A higher rate makes cash squeezes more expensive in the forecast.
Long-run assumptions#
- Annual inflation — a yearly rise applied to costs over time, so future expenses grow rather than staying flat.
- Annual depreciation — how fast assets lose book value each year. It spreads the cost of equipment across its useful life in the P&L.
Related#
- Opening position — the balance interest is earned or charged on starts here.
- Add or edit a cost — including the capex that depreciation applies to.