The SendPay free business calculators MCP server,
connected in one click.

find_free_tool — Search SendPay Business's library of 170+ free calculators, checkers and generators for small businesses, freelancers, banking, FX, trading

vat_calculator — Add VAT to a net price, or remove VAT from a gross (VAT-inclusive) price, at any rate. UK standard rate is 20%, reduced 5%.

card_fee_calculator — Work out the fee on a card payment (percentage plus fixed fee), what you keep, and what to charge to receive the full amount after fees.

profit_margin_calculator — Profit, margin and markup from cost and selling price; or the selling price needed for a target margin.

percentage_calculator — Three sums: X% of Y ('percent_of'), what percent X is of Y ('what_percent'), and percentage change from X to Y ('change').

discount_calculator — Sale price after a percentage discount and, given unit cost and units normally sold, how many extra sales the discount needs to keep the sam

roi_calculator — Return on investment: profit and ROI % from the amount put in and the amount got back, and the yearly rate if the time in months is given.

compound_interest_calculator — Savings growth with monthly compounding and an optional monthly deposit: final balance, total paid in and interest earned.