
Car Decision Analyzer Ritual
True cost per month — depreciation or lease payments, interest, fuel, insurance, maintenance and expected repairs, spread over the years you will keep it — keep, buy new, buy used or lease, the same way.
What the file tells you
The payment is not the cost. This sheet prices keeping your old car, buying new, buying used and leasing the same way — depreciation, interest, fuel, insurance, repairs — over the years you will actually keep it, and tells you which is cheapest, which you can afford, and which number is a guess.
Anyone about to sign for a car who suspects the monthly payment is hiding something.

Excel 2016+ or Microsoft 365. Or upload the .xlsx to Google Drive — it opens in Sheets with formulas and charts intact.
Yes — BLIK, Przelewy24, any card, Apple Pay, Google Pay and PayPal. Prices in PLN, EUR, USD or GBP; the currency switch is at the top.
Tick “I’m purchasing as a business” at checkout and enter your NIP / VAT ID. The invoice arrives with the download e-mail.
14-day refund, no questions. One e-mail to [email protected].