House Flipping Calculator

Plug in ARV, rehab budget, and financing.

Deal inputs

Use the actual asking or negotiated price — not a wishlist number.

Buying from a wholesaler? Their assignment fee goes in advanced options.

Recent comps within about a mile — not a wishlist number.

Materials, labor, and permits — before any markup.

15% contingency added automatically
rehab + days on market

Total time from purchase to your expected sale close.

mo
% of ARV

Agent commission, seller-paid closing costs, and any buyer credits you concede to close.

%

Sets what the lender advances, which decides how much cash you actually put in.

hard money, interest-only

Short-term financing from a private lender, priced above a mortgage.

%

Net profit

$37,616

10.9% of ARV

Cash in

$54,734

Cash-on-cash

68.7%

Annualized

137.4%

Where the money goes

Purchase price

What you pay the seller

$185,000

Rehab budget

Your contractor scope as entered

$62,000

Rehab contingency

15% of the rehab budget

$9,300

Buy-side closing costs

2% of the purchase price

$3,700

Holding costs

$850/month over 6 months

$5,100

Origination points

2% of the funded loan, paid at closing

$4,570

Lender fees

Underwriting, appraisal, and doc prep

$1,495

Loan interest

Interest-only over 6 months, drawn progressively

$12,069
Total project cost$283,234

Funded by the loan

$228,500

Sell-side costs

$24,150

This deal ties up $54,734 of your own cash for 6 months to clear $37,616 — a 68.7% return on the cash you put in.

70% Rule

A quick offer ceiling investors use as a sanity check: don't pay more than 70% of ARV minus rehab costs.

Fail
Max allowable offer $179,500

$5,500 over the ceiling. That's what the acquisition has to come down before this deal passes.

If it doesn't go to plan

Point estimates hide risk. Here's the same deal under pressure.

Break-even sale price$303,198

The market can soften 12.1% below your $345,000 ARV before this deal stops making money.

Base case
$37,616
Conservative
$8,123
Stress
-$22,778
ScenarioProfitVerdict

Base case

Your numbers as entered

$37,616

$54,734 cash in

Conservative

ARV −5%, rehab +15%, +1 month

$8,123

$67,259 cash in

Stress

ARV −10%, rehab +30%, +3 months

-$22,778

$94,193 cash in

The stress case needs $94,193 in cash — $39,459 more than the base case. $29,750 of that is the 70% of ARV cap: the loan follows the softer ARV instead of your rising costs, and the shortfall is yours to cover.

Which one hurts most

The rows above move all three at once. Here they are one at a time, off your base case — so you know which number to defend.

ARV −5%

Softer comps

−$16,043

$21,573 left

Rehab +15%

Budget overrun

−$11,256

$26,360 left

+1 month

Slower sale

−$2,862

$34,754 left

ARV −5% is the one that costs you most — it takes $16,043 off this deal on its own. Each bar moves one input and holds the other two where you set them, so they won't add up to the scenarios above.

How to use this calculator

Start with your purchase price and an after-repair value pulled from recent comparable sales within a mile of the subject property. Rehab budgets are where most deals go wrong: contractors quote optimistically, and a 15% contingency is the minimum a disciplined operator carries. Financing here assumes interest-only hard money. Interest accrues against the balance actually outstanding: the purchase advance funds at closing, and the rehab holdback is released in draws, so a deal with a big rehab budget carries less than its full loan for much of the hold — and a cosmetic deal with no draws carries all of it from day one. Origination points and lender fees are charged too, because they come out of your cash at closing rather than out of the loan.

Pricing the financing itself? The hard money loan calculator breaks out points, lender fees, and cash to close, and annualizes them into the rate the loan really carries.