BRRRR Calculator: The Complete Step-by-Step Guide for 2026
The BRRRR strategy is surging in 2026 — but BRRRR math is surprisingly easy to get wrong. This guide walks you through every input so you can model any deal accurately before committing a dollar.
What Is the BRRRR Method? (Quick Recap)
BRRRR is a 5-step cycle for building a rental portfolio using recycled capital:
- Buy — Acquire an undervalued or distressed property, typically below market value
- Rehab — Renovate to increase the after-repair value (ARV)
- Rent — Place tenants to generate monthly cash flow
- Refinance — Do a cash-out refinance at the new, higher appraised value
- Repeat — Use the pulled-out equity to fund the next deal
The goal: pull out as much of your original investment as possible during the refinance, ideally leaving little-to-no money "in" the deal long-term.
See our full BRRRR Strategy Guide for a deeper dive into executing each step. This guide focuses specifically on how to use the calculator to analyze deals before you buy.
👉 Try the Free BRRRR Calculator → — model any deal in under 2 minutes
The 5 Key Inputs Your BRRRR Calculator Needs
Purchase Price
This is what you pay to acquire the property. BRRRR works best when you buy at 60–75% of ARV minus rehab costs. The lower your purchase price relative to ARV, the more equity you create — and the more you can pull out at refinance.
Pro tip: Use the ARV Calculator first to estimate after-repair value before calculating what you can afford to pay.
Rehab Cost
The most commonly underestimated input. The 2024 HomeAdvisor True Cost Report found that 63% of renovation projects exceed budget by an average of 18%. Build in a 20% contingency buffer.
Key rehab categories to itemize:
- Structural (roof, foundation, HVAC): typically $8,000–$35,000
- Cosmetic (flooring, paint, fixtures): $5,000–$18,000
- Kitchen and bathrooms: $6,000–$25,000 each
- Systems (plumbing, electrical): $3,000–$20,000
If you don't have contractor bids yet, use $25/sq ft for light rehab, $40/sq ft for medium, and $65/sq ft for heavy.
After-Repair Value (ARV)
ARV is the estimated market value of the property after all renovations are complete. This is the number your refinance is based on — so it's the most critical input to get right.
How to calculate ARV:
- Pull 3–5 comparable sales (comps) within 1 mile, sold in the last 6 months
- Adjust for square footage, bed/bath count, condition, and lot size
- Weight more recent and closer comps more heavily
Conservative rule: Don't rely on a single comp. Average 3+ comps and take the middle value.
Refinance LTV
Lenders typically allow 70–80% loan-to-value on investment property cash-out refinances in 2026. Some lenders require a 6–12 month seasoning period before they'll refinance.
At 75% LTV on a property with $200K ARV, your new loan is $150K. If total acquisition + rehab cost was $130K, you pull out $20K and still have equity in the deal.
Stress test your deal at 70% LTV — if it doesn't work at 70%, the margin is too thin.
Expected Monthly Rent
Use rental comps from Rentometer, Zillow, or local property managers. Be realistic — overestimating rent destroys your cash flow calculation.
Typical BRRRR target: Gross rent yield of 1%+ of ARV per month (the "1% rule"). If ARV is $200K, target $2,000/month rent.
How to Read the BRRRR Calculator Output
The BRRRR Calculator produces four key outputs:
| Output | Formula | Target |
|---|---|---|
| Total Capital Invested | Purchase + Rehab + Holding + Closing costs | Your "money in" before the refinance |
| Cash-Out at Refinance | (ARV × LTV%) − any acquisition loan payoff | As close to "Total Capital In" as possible |
| Money Left in Deal | Total Capital In − Cash-Out | Under $10,000 (negative = infinite return) |
| Monthly Cash Flow | Rent − (Mortgage + Insurance + Taxes + PM + Vacancy) | $200–$400/month minimum after all expenses |
💡 The Infinite Return Goal
If you pull out more than you put in, you've achieved infinite return on equity — you own a rented property generating monthly income with zero capital remaining in the deal. That's BRRRR working at its best.
Note that cap rate and cash-on-cash are different metrics. After a BRRRR refinance where you have little equity left in, cash-on-cash becomes nearly infinite — which is the point. See our Cap Rate vs Cash-on-Cash guide for the full breakdown.
Common BRRRR Calculator Mistakes (And How to Fix Them)
Mistake 1: Forgetting Holding Costs
Most calculators forget the 3–6 months of costs while you're rehabbing and stabilizing. Include:
- Interest payments on hard money loan (typically 10–14%/year)
- Utilities during rehab
- Insurance during vacancy
- Property taxes
A 4-month rehab on a $150K hard money loan at 12% costs $6,000 just in interest.
Mistake 2: Using Best-Case ARV
Appraisers and markets don't always cooperate. Run your calculator at 90% of your estimated ARV as a downside scenario.
Mistake 3: Ignoring the Seasoning Period
If your lender requires 6–12 months seasoning before refinancing, you're carrying costs longer than expected. Model this into your holding cost calculation.
Mistake 4: Comparing Cap Rate and Cash-on-Cash Interchangeably
These are different metrics with different uses. Cap rate measures unlevered property value; cash-on-cash measures your return on actual cash invested. After a BRRRR refinance where you have little equity left in, cash-on-cash becomes nearly infinite — which is the point. See our Cap Rate vs Cash-on-Cash guide for the full breakdown.
A Real BRRRR Deal Example (2026 Numbers)
| Input / Output | Value |
|---|---|
| Purchase Price | $95,000 |
| Rehab Budget | $45,000 |
| Rehab Contingency (20%) | $9,000 |
| Holding Costs (5 months) | $7,500 |
| Closing Costs (in + out) | $6,000 |
| Total Capital In | $162,500 |
| ARV | $220,000 |
| Refinance LTV | 75% |
| New Loan (Cash-Out) | $165,000 |
| Money Left In Deal | −$2,500 (pulled out $2,500 more than invested) |
Monthly performance:
- Rent: $1,900/month
- PITIA (new mortgage at 7%): $1,050/month
- Insurance + Taxes: $280/month
- Vacancy + Management (15%): $285/month
- Net Cash Flow: $285/month
📊 What These Numbers Mean
This deal generates $285/month with essentially zero equity left in — you recovered 100% of your capital plus $2,500 extra. That's the BRRRR strategy working exactly as designed: infinite return on capital deployed.
When BRRRR Doesn't Work
BRRRR fails when:
- Rehab costs exceed projections by 25%+
- ARV comes in 10–15% below estimate at appraisal
- Interest rates push DSCR below lender minimums
- Seasoning requirements extend hold period past cash reserves
If your total costs exceed 80% of ARV before the refinance, the deal won't pencil. Walk away. No calculator can save a deal that was bought too high.
👉 Ready to run your own deal? Try the Free BRRRR Calculator →
Model purchase price, rehab budget, ARV, and expected rent in under 2 minutes. See exactly how much capital you'll leave in the deal and what your monthly cash flow looks like post-refinance.
Last updated: April 2026.