Holding Cost Calculator - monthly carrying cost for flips
Estimate monthly carrying costs and total holding cost from taxes, insurance, loan interest, utilities and reserves across your expected timeline.
A conservative hold period includes acquisition, permitting, rehab, listing, buyer financing and closing. Add a month when timing is uncertain.
Carrying cost estimate
$10,150
$2,030 per month for 5 months
- Taxes
- $350
- Insurance
- $180
- Loan interest
- $1,100
- Utilities
- $250
- HOA
- $0
- Other reserves
- $150
- Monthly total
- $2,030
Why holding costs matter
Holding costs are easy to ignore because they arrive one month at a time. In a real flip or BRRRR project, they can be the difference between a clean margin and a disappointing return. This free holding cost calculator adds the monthly costs that keep the property alive while you own it: taxes, insurance, loan interest, utilities, HOA and other reserves. Multiply that monthly carrying cost by the number of months in the project and you get the total drag on profit before resale or refinance.
Conservative investors do not count only the construction window. The holding period should include acquisition, permit delays, contractor scheduling, inspections, listing, buyer financing and closing. If the plan says four months but the market is slowing, run five or six months and see whether the deal still works. Debt-heavy projects are especially sensitive because interest keeps accruing even when the property is not producing income. Utilities, winterization, lawn care and security can also add up on vacant homes.
Connect carrying costs to profit
After you estimate carrying cost, move the number into the Flip Profit Calculator so net profit and ROI reflect the real timeline. If the holding cost is for a rental reposition, compare it with the BRRRR Calculator before relying on refinance proceeds. For the other core inputs, use the ARV Calculator and Rehab Cost Estimator. The goal is simple: make every quiet cost visible before the offer goes out.
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Frequently asked questions
What are holding costs in real estate investing?＋
Holding costs are the expenses you pay while you own the property before resale or stabilization. Common examples are loan interest, property taxes, insurance, utilities, HOA, lawn care, security and reserves.
How do you calculate total holding cost?＋
Add the monthly carrying costs, then multiply by the number of months you expect to hold the property. This calculator uses monthly taxes + insurance + loan interest + utilities + HOA + other reserves, multiplied by the holding period.
Should rehab time and sale time both count?＋
Yes. A conservative hold period includes acquisition, permitting, rehab, inspection, listing, buyer financing and closing. If you only count construction time, you will usually understate carrying costs.
What if taxes or insurance are paid annually?＋
Convert them to a monthly amount by dividing the annual bill by 12. For example, $4,200 in annual property tax is $350 per month in the calculator.
Do holding costs affect ROI?＋
Yes. Holding costs reduce net profit and increase the cash tied up in the project. Longer timelines can turn a good-looking flip into a marginal deal, especially with private or hard money debt.
Is loan principal included as a holding cost?＋
For flip screening, investors usually include interest and fees as costs. Principal repayment is debt paydown, not an expense in the same way, but your lender terms and cash needs still matter.