70 Percent Rule Calculator

Determine your Maximum Allowable Offer (MAO) for real estate investments instantly.

Offer Sensitivity Table

Rule Percentage	Offer Limit	Safety Margin	Notes

What is the 70 Percent Rule Calculator?

The 70 percent rule calculator is a fundamental tool used by real estate investors to determine the maximum price they should pay for a distressed property. Primarily used by house flippers and wholesalers, this rule of thumb ensures that an investor maintains a sufficient profit margin while covering repair costs and holding expenses.

In the world of real estate investing, the 70 percent rule calculator suggests that an investor should pay no more than 70% of the After Repair Value (ARV) of a property, minus the estimated cost of repairs. This 30% gap is designed to cover closing costs, financing fees, holding costs (taxes, insurance, utilities), and finally, the investor's profit.

Common misconceptions include the idea that this rule is a law. In reality, the 70 percent rule calculator is a starting point. In high-demand markets with low inventory, investors might use a 75% or 80% rule, while in slower markets or for higher-risk projects, a 65% rule might be more appropriate.

70 Percent Rule Formula and Mathematical Explanation

To use the 70 percent rule calculator manually, you must follow a simple linear equation. The derivation is based on protecting the investor's downside risk by building in a 30% equity cushion from the start.

The Formula: MAO = (ARV × 0.70) − Repairs

Variable	Meaning	Unit	Typical Range
ARV	After Repair Value	USD ($)	$100,000 – $2M+
0.70	Percentage Factor	Decimal	0.65 – 0.80
Repairs	Estimated Rehab Budget	USD ($)	10% – 50% of ARV
MAO	Maximum Allowable Offer	USD ($)	Output Result

Practical Examples (Real-World Use Cases)

Example 1: The Standard Suburban Flip

An investor finds a ranch-style home. The 70 percent rule calculator is applied with the following inputs:

• ARV: $400,000 (Based on local comps)
• Repairs: $60,000 (Kitchen, baths, flooring, paint)

Calculation: ($400,000 × 0.70) = $280,000. Then, $280,000 – $60,000 = $220,000. The investor should not offer more than $220,000 for the property.

Example 2: A Minor Cosmetic Refresh

A property requires very little work but is in a premium area:

• ARV: $250,000
• Repairs: $15,000 (Paint and landscaping)

Calculation: ($250,000 × 0.70) = $175,000. Then, $175,000 – $15,000 = $160,000. Even though the repairs are low, the 70 percent rule calculator ensures the purchase price reflects the risk and overhead of a quick turnaround.

How to Use This 70 Percent Rule Calculator

Follow these simple steps to ensure you are getting accurate results from the 70 percent rule calculator:

1. Determine the ARV: Research "comparable sales" (comps) in the area for homes in pristine condition that have sold in the last 6 months.
2. Estimate Repairs: Walk through the property and tally up costs for materials and labor. Be conservative and add a 10% contingency.
3. Input Values: Enter these two numbers into the fields above.
4. Review Results: The 70 percent rule calculator will instantly show your Maximum Allowable Offer.
5. Adjust for Market: If you are in a "hot" market (e.g., Austin or Seattle), look at the sensitivity table to see if a 75% offer is still viable for your profit goals.

Key Factors That Affect 70 Percent Rule Calculator Results

While the 70 percent rule calculator is powerful, these six factors can influence your final decision:

• Interest Rates: High rates increase your holding costs, making the 70% rule even more critical for survival.
• Time to Flip: A 12-month project costs significantly more in utilities, taxes, and insurance than a 3-month project.
• Risk of Scope Creep: If the foundation is cracked or mold is found, repair costs will skyrocket, rendering the initial 70 percent rule calculator output too high.
• Exit Strategy: If you plan to "BRRRR" (Buy, Rehab, Rent, Refinance, Repeat) instead of flip, your percentage thresholds might change based on rental yield.
• Local Taxes: High property tax states like New Jersey require a stricter percentage to maintain profitability.
• Selling Fees: Don't forget that 5-6% of the ARV usually goes to real estate agent commissions upon sale.

Frequently Asked Questions (FAQ)

Does the 70 percent rule calculator include closing costs?

Yes, the 30% "spread" in the 70 percent rule calculator is designed to cover buying costs, selling costs, holding costs, and profit. However, it is always wise to double-check your specific local closing fees.

Can I use the 70 percent rule for rentals?

While primarily a flipping tool, many investors use the 70 percent rule calculator to ensure they have enough equity to refinance 100% of their capital out of the deal later.

What if the market is very competitive?

In competitive markets, many investors "squeeze" their margins and move to a 75% or even 80% rule. Use our 70 percent rule calculator sensitivity table to see these variations.

Is the ARV the current value or the future value?

ARV stands for After Repair Value, meaning it is the estimated market value after you have finished all renovations.

Do I include my own labor in the repair costs?

Yes. Even if you do the work yourself, you should input the fair market value of that labor into the 70 percent rule calculator to ensure the deal stands on its own merits.

What is a "good" profit margin for a flip?

Most investors using the 70 percent rule calculator aim for a net profit of 10-15% of the ARV after all expenses are paid.

Does this rule work for luxury homes?

The 70 percent rule calculator often breaks down on luxury homes (over $1M) because the 30% spread ($300k+) might be excessively large for the actual risk involved.

What is the most common mistake when using this calculator?

Underestimating repair costs is the #1 reason investors lose money, even when they strictly follow the 70 percent rule calculator.