Flipi House Flip Profit Calculator
Estimate deal profitability, ROI, and break-even sale price before you buy.
Tip: Selling costs usually include agent commissions, staging, title/escrow, and seller concessions.
What is a Flipi calculator?
A flipi calculator is a quick decision tool for real estate investors who flip houses. It helps you estimate whether a project is worth doing before you commit capital. Instead of guessing, you can model purchase price, rehab budget, financing, holding costs, and exit assumptions in one place.
The goal is simple: protect your downside and spot strong deals faster. Even experienced investors can underestimate soft costs, especially financing and time-related expenses.
How this calculator works
This calculator follows a practical, investor-friendly process:
- Starts with all-in project costs (buy + rehab + closing + holding + financing + selling costs).
- Compares those costs against your expected sale price.
- Estimates taxes on positive gains.
- Computes net profit, cash-on-cash ROI, annualized ROI, and break-even sale price.
Core formula
Net Profit = Sale Price − Total Costs − Taxes
ROI = Net Profit ÷ Cash Invested
If your margin is thin, one surprise (extra month of holding, contractor delay, lower appraisal, or rate shock) can wipe out profit. That is why disciplined underwriting matters.
How to use it like a pro
1) Be conservative on sale price
Use realistic comparables, not best-case comps. If similar homes sold for $270k–$285k, underwrite closer to the middle or low end unless you have clear reasons for premium pricing.
2) Pad your rehab budget
Older homes hide surprises. Add a contingency buffer, often 10% to 15%, for structural, electrical, plumbing, and permit-related changes.
3) Respect time risk
Delays increase monthly carrying costs and interest. A six-month plan often becomes eight months in the real world.
4) Never ignore selling costs
Agent fees and closing costs can remove a large chunk of gross profit. Include them from day one.
Key numbers to watch before you buy
- Net Profit: Your bottom line after all modeled costs.
- ROI: Return on your cash invested, not just headline profit.
- Annualized ROI: Lets you compare short flips vs longer projects.
- Break-even Price: The minimum sale price needed to avoid losing money.
- 70% Rule MAO: A rough “maximum allowable offer” reference to prevent overpaying.
Example deal walkthrough
Suppose you buy at $180,000, spend $35,000 on rehab, hold for 6 months, and sell for $285,000. With financing, selling fees, and taxes included, the calculator may show a profit that looks good on paper— but not as large as many first-time flippers expect.
This is exactly why running numbers first is non-negotiable. The spread between purchase and sale price is not true profit until every cost category is accounted for.
Common flipping mistakes this tool helps prevent
- Overestimating ARV (After Repair Value)
- Underestimating rehab and timeline
- Ignoring finance charges and points
- Failing to include selling friction costs
- Buying based on emotion instead of data
Final thought
A flipi calculator will not replace judgment, but it dramatically improves discipline. Treat the output as a decision framework: if the margin is thin under conservative assumptions, pass and wait for a better deal. In house flipping, what you don’t buy is often as important as what you do buy.