Run the numbers before you make the offer.
DealWorksheet is a free suite of deal-analysis calculators for landlords and small property investors. No signup, nothing gated - every tool works the moment the page loads, explains its formula, and shows a worked example with real numbers.
Calculators
Cap Rate Calculator
Cap rate with a full NOI builder - rent, vacancy and operating expenses itemised, mortgage excluded.
Coming soonRental Property Worksheet
The flagship: one page that carries a deal from purchase price to cash flow, DSCR and max loan.
Coming soonCash-on-Cash Return
Annual cash flow after debt service, divided by the cash you actually put in.
Coming soonDSCR Calculator
Debt service coverage ratio the way lenders underwrite it - rent against PITIA, with the 1.0 / 1.2 / 1.25 thresholds.
Coming soonMax Loan at Target DSCR
The reverse question: given the rent, what is the largest loan that still clears your DSCR target?
Coming soonBRRRR Calculator
Buy, rehab, rent, refinance, repeat - model the refinance and how much cash stays in the deal.
Coming soonFix & Flip / 70% Rule
Maximum allowable offer and projected profit for a flip, from ARV and repair costs.
Coming soonGross Rent Multiplier
The quick screen: price divided by gross annual rent, for comparing properties at a glance.
Why another calculator site?
Because most investor calculators are either shallow - one metric, no expense detail - or locked behind a signup wall so a sales team can call you. DealWorksheet is built by a software engineer who spent four years inside a bank's core systems: the maths is done properly (real amortisation, real DSCR sizing), the assumptions are shown, and the answer is free. Start with the cap rate calculator.
DealWorksheet is an educational tool, not financial, legal or tax advice. Figures are estimates based on the numbers you enter; verify a property's actual expenses before making an offer.