BRRRR Calculator

The BRRRR method separates the acquisition of a distressed or undervalued property from its long-term financing. An investor buys with cash or short-term debt, typically a hard money or private loan, renovates the property to raise both its condition and its market value, places a tenant, and then refinances into a long-term mortgage sized off the new, higher appraised value rather than the original purchase price. Because the refinance loan is based on the after-repair value, the proceeds can exceed the total amount the investor put into buying and renovating the property, allowing most of that capital to be returned.

This calculator models the process in five linked steps. First, all-in cost is the sum of purchase price, rehab cost, closing costs, and holding costs incurred before the refinance, representing everything the investor has spent to reach a stabilized, rentable asset. Second, refinance proceeds equal the after-repair value multiplied by the refinance lender's loan-to-value ceiling, which is the new loan amount the investor receives at closing on the permanent mortgage.

Third, cash left in deal is the all-in cost minus the refinance proceeds, floored at zero, because most lenders will not disburse cash back to the borrower beyond what was actually spent on a cash-out refinance inside the typical six-month seasoning window; some portfolio and delayed-financing exceptions exist and are discussed below. Fourth, the calculator amortizes the new loan at the stated rate and term to find the monthly principal and interest payment, then nets that against rent and an operating-expense-and-vacancy allowance to produce monthly cash flow and DSCR. Fifth, equity captured is the after-repair value minus the refinance proceeds, representing the owner's equity stake in the property the day the refinance closes.

Cash-on-cash return divides the resulting annual cash flow by the cash left in the deal, not by the original all-in cost, because the entire point of BRRRR is to measure return on the capital that remains tied up after the refinance. When cash left in the deal approaches zero, cash-on-cash return becomes mathematically enormous or undefined, which is the theoretical ideal of the strategy but also a sign to sanity-check the inputs, since a genuinely infinite return usually signals either an unusually strong forced-appreciation deal or an ARV estimate that is too aggressive.

Consider a single-family rental in a Midwest secondary market. Purchase price is $120,000, rehab budget is $40,000 covering a kitchen, both bathrooms, flooring, and mechanical repairs, closing costs on the purchase are $4,000, and holding costs during a four-month rehab, covering the hard money interest, insurance, and utilities, total $3,000. All-in cost is $167,000.

After renovation, an appraiser values the property at $220,000 based on three comparable sales that recently sold at $215,000 to $228,000. The investor refinances with a local bank's DSCR loan program at 75% LTV, producing refinance proceeds of $165,000. Cash left in the deal is $167,000 minus $165,000, or $2,000, an excellent outcome that is achievable but not typical; many BRRRR deals leave $10,000 to $30,000 of cash in the property.

The new loan is amortized at 7.25% over 30 years, producing a monthly principal and interest payment of roughly $1,126. Market rent is $2,100 per month. Applying a 40% allowance for property management, maintenance, capital reserves, vacancy, and taxes and insurance leaves $1,260 of net operating income per month, against which the $1,126 payment produces monthly cash flow of about $134 and a DSCR of roughly 1.12x.

Cash-on-cash return on the $2,000 remaining in the deal is $134 times 12 divided by $2,000, or roughly 80%, an extreme number driven by the unusually small amount of cash left in the property. If the appraisal had instead come in at $195,000, a more conservative outcome, refinance proceeds at 75% LTV would be $146,250, cash left in the deal would rise to about $20,750, and the same $134 of monthly cash flow would produce a cash-on-cash return closer to 7.7%, which is a far more representative BRRRR result.

Most conventional and DSCR refinance lenders in the United States require a seasoning period before they will lend against the after-repair value rather than the original purchase price. Fannie Mae's delayed financing exception allows a cash-out refinance immediately after an all-cash purchase, but only up to the original purchase price plus documented improvement costs, not the full appraised ARV, unless the property was owned for at least six months. Most DSCR and portfolio lenders that specialize in BRRRR refinances use a six-month seasoning requirement measured from the purchase closing date to the refinance application or appraisal date.

Because of seasoning, the initial purchase and rehab financing is almost always short-term debt: hard money, private money, or a line of credit, priced from roughly 9% to 13% interest plus one to three points in the current market, reflecting both the higher risk profile and the six-to-twelve-month intended holding period. That cost belongs in the holding-cost input of this calculator, since it directly affects all-in cost and therefore how much cash remains trapped after refinance.

Refinance LTV on the permanent loan typically ranges from 70% to 80% for DSCR and conventional investment-property loans, with 75% a common midpoint. Some portfolio lenders will go to 80% for strong DSCR ratios and lower-risk markets, while others cap non-owner-occupied cash-out refinances at 70% regardless of property performance. The lender will use the lower of the appraised value and any contractual purchase-price limitation, so an appraisal that dramatically exceeds the total invested is the single biggest driver of a successful BRRRR outcome.

DSCR loans, now the dominant product for BRRRR refinances, size the loan primarily off the property's own rental income rather than the borrower's personal debt-to-income ratio, typically requiring a minimum DSCR of 1.00x to 1.25x depending on the lender and pricing tier. A property that cannot clear the minimum DSCR at the requested loan amount will simply be sized down by the lender, which increases cash left in the deal beyond what this calculator's stated refinance LTV alone would suggest, so treat the DSCR output here as a check against that risk, not a guarantee of loan approval.

Overestimating the after-repair value is the single most damaging mistake in BRRRR analysis, because every downstream number, refinance proceeds, cash left in deal, and equity captured, is a direct function of ARV. Investors should build ARV from at least three genuinely comparable, recently closed sales within a half-mile and 90 days where possible, adjusted conservatively for condition and size, and should discount any comp pulled from before a rehab is complete rather than assuming the top of a range.

Underestimating rehab scope is the second most common failure. Change orders, permit delays, and unexpected mechanical, structural, or code-compliance issues routinely add 15% to 30% to an initial rehab budget on older housing stock. Building a contingency of at least 10% to 15% into the rehab cost input, rather than treating the contractor's initial bid as the actual cost, produces a far more reliable all-in cost figure.

Ignoring refinance-rate risk between the purchase and the refinance closing is a growing issue in a volatile rate environment. A DSCR test that passes comfortably at a projected 6.5% rate can fail at 7.5% if rates move during the rehab period, since DSCR is directly sensitive to the debt-service denominator; running this calculator at a rate 75 to 100 basis points above the current quote is a reasonable stress test.

Treating cash-on-cash return as the only metric worth optimizing can lead investors to chase deals with almost no cash left in them but weak or negative absolute monthly cash flow, since a small denominator inflates the percentage even when the dollar return is thin. A deal that leaves $500 in cash and produces $20 a month in cash flow technically shows a 48% cash-on-cash return but provides almost no cushion against a vacancy, a major repair, or a rent-growth stall, so absolute monthly cash flow and DSCR should always be reviewed alongside the percentage return.

Failing to model vacancy and capital expenditure reserves realistically inflates projected cash flow. A 40% combined allowance for property management, maintenance, capital reserves, vacancy, and taxes and insurance is a reasonable starting point for single-family and small multifamily rentals in most US markets, though high-tax states and older properties can push that figure to 45% or 50%.

The strategy compounds only when refinance proceeds consistently return most of the capital deployed, allowing the same base of cash to fund a second, third, and fourth acquisition within roughly a twelve to eighteen month cycle per property. Investors who track this discipline typically model a target of returning at least 80% to 90% of all-in cost through the refinance, treating anything less as a partial win that still requires meaningfully new capital for the next deal.

BRRRR performs best in markets with a meaningful spread between purchase price and stabilized after-repair value, commonly secondary and tertiary Midwest, Southeast, and parts of the Sun Belt where distressed inventory trades well below replacement cost and renovation costs are moderate relative to resulting rents. It performs poorly in high-cost coastal markets where renovation costs are high relative to the achievable rent increase and where after-repair values are already close to as-is purchase prices, leaving little forced appreciation to refinance against.

Rising interest rates compress the strategy on two fronts simultaneously: they raise the cost of the initial hard money bridge loan, increasing holding costs, and they raise the payment on the permanent refinance loan, which both increases cash left in the deal (because DSCR limits kick in before the stated LTV does) and reduces the resulting monthly cash flow. In a rate environment above roughly 7% on permanent DSCR debt, many secondary-market BRRRR deals that worked at 5% to 6% no longer refinance cleanly at full stated LTV.

Investors should also model a downside ARV scenario, typically 10% below the primary estimate, before committing capital. If cash left in the deal under that downside case is still a manageable, plannable amount rather than a shock, the deal has genuine underwriting margin; if the downside case leaves the investor needing to bring five figures of unplanned cash to the refinance closing table, the deal is more fragile than the base case suggests.