ARDOTOOLS

House Flip Profit Calculator

Estimate house-flip profit after purchase, renovation, financing, holding, and selling costs.

Inputs

Result

Planning estimate only. Replace assumptions with your real costs, contracts, taxes, and market conditions.

How it works

  1. Enter the buy and the budget

    Purchase price and what the renovation will realistically cost.

  2. Add the costs that are not the build

    Stamp duty or transfer tax, legal fees, finance, and the months you hold it.

  3. Compare against the resale

    What is left after selling costs is the profit — and the margin on the capital at risk.

Who this is for

Deciding what to bid

Work backwards from the profit you need to the highest price that still delivers it.

Sanity-checking a renovation budget

Overruns eat the margin first.

Costing a delay

Holding costs accrue whether or not work is happening.

Comparing two projects

A bigger profit on far more capital and time is not necessarily the better one.

Questions

What should I budget for overruns?
A contingency of 10–20% of the renovation budget is a common rule, higher for older properties or anything structural. Projects that discover problems discover them after you own the building.
What are holding costs?
Everything you pay while you own it and it earns nothing: finance, insurance, utilities, council tax or rates, security. They scale with time, which is why delays hurt more than they look.
Why does the profit look smaller than price minus costs?
Because selling is not free. Agent commission, legal fees and any finance exit charge come off the sale, not off the purchase.
Does this account for tax on the profit?
No. Flip profits are taxed very differently depending on where you are and whether you trade as an individual or a company. Treat the result as pre-tax.