The MAO Formula and the 70% Rule: Never Overpay for a Deal

By this point in the module, you've learned how to determine a property's After Repair Value and how to estimate repair costs with enough accuracy to protect yourself and your buyers. Now it's time to bring those two numbers together and answer the most important question in every wholesale deal: What is the absolute maximum I should pay for this property?

That answer comes from the Maximum Allowable Offer (MAO) formula — the single most important calculation in your wholesaling business. Master this formula, apply it consistently, and you will never overpay for a deal. Ignore it, and even one bad acquisition can wipe out months of profit.

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Why You Need a Hard Number Before Every Offer

New wholesalers often make offers based on gut feel, list price anchoring, or a vague sense that a property "looks like a deal." This is how you lose money.

The seller's list price is completely irrelevant to your offer. A property listed at $85,000 might be worth offering $62,000 on — or it might not be worth offering anything at all. The MAO formula cuts through the noise and gives you a defensible, math-based ceiling. When you submit an offer, you're not negotiating emotionally — you're reporting a number that the math produced.

This protects you in two critical ways: 1. It protects your wholesale fee. You can't get paid if you overpay on the front end. 2. It protects your buyer's profit. A fix-and-flip investor who can't make money on your deal won't buy it — and won't work with you again.

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The MAO Formula, Explained

Here is the core formula you'll use on every residential wholesale deal:

MAO = (ARV × 0.70) − Estimated Repairs − Your Assignment Fee

Let's break down each component.

ARV (After Repair Value)

This is the property's market value after all renovations are complete, based on the comparable sales analysis you ran in Lesson 1 of this module. It represents what a retail buyer would pay for the property in move-in-ready condition.

The 0.70 Multiplier (The 70% Rule)

Multiplying the ARV by 70% creates a built-in profit buffer for your end buyer — typically a fix-and-flip investor. That 30% spread is designed to cover: - The investor's holding costs (mortgage interest, insurance, utilities, property taxes during the renovation — typically 3–6 months) - Closing costs on both the purchase and the resale (typically 2–3% on each end) - Selling costs including agent commissions (typically 5–6%) - The investor's profit margin (most experienced flippers target a minimum of 15–20% of ARV)

When you add all of that up, 30% of ARV disappears quickly. The 70% rule isn't arbitrary — it's a compressed version of every cost and profit expectation a serious investor carries into a flip.

Estimated Repairs

This is the repair figure you developed in Lesson 2, including your 10–15% contingency buffer. You subtract it from the 70% baseline because the investor pays for renovations out of their own capital — every dollar of rehab reduces what they can afford to pay for the property itself.

Your Assignment Fee

This is your wholesale profit — the amount you charge to assign your purchase contract to the end buyer. A realistic target for most beginner wholesalers is $10,000 minimum per deal, though fees of $15,000–$25,000 are common on larger deals in higher-priced markets. You subtract your fee from the formula because it comes out of the investor's acquisition budget.

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The Formula in Action: A Full Example

Let's run a complete deal from start to finish.

The Property: A 3-bedroom, 1,400 sq ft single-family home in a working-class neighborhood. The seller is asking $95,000.

Step 1 — Determine ARV: Based on three comparable sales within a half-mile radius, all renovated homes in similar condition sold between $155,000 and $165,000 in the last 90 days. You use the conservative end: ARV = $155,000.

Step 2 — Estimate Repairs: The property needs a full cosmetic renovation plus a roof replacement. Using your dollar-per-square-foot method at $35/sqft for the cosmetic work ($49,000) plus a roof estimate of $9,000, your base repair estimate is $58,000. Adding a 12% contingency buffer: $58,000 × 1.12 = $64,960 → round up to $65,000.

Step 3 — Set Your Assignment Fee: You want $12,000 on this deal.

Step 4 — Apply the MAO Formula:

• ARV × 0.70 = $155,000 × 0.70 = $108,500
• Subtract Repairs: $108,500 − $65,000 = $43,500
• Subtract Assignment Fee: $43,500 − $12,000 = $31,500

Your MAO = $31,500

The seller is asking $95,000. Your maximum offer is $31,500. This deal, at the seller's asking price, is not viable. But that's exactly the point — the formula told you that before you wasted time negotiating. If the seller is motivated enough to accept $31,500 or close to it, you have a real deal. If not, you move on.

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Adjusting the Multiplier for Market Conditions and Buyer Types

The 70% rule is your default starting point, but experienced wholesalers know that the multiplier is not fixed. Here's how to adjust it intelligently.

When to Use a Higher Multiplier (75%–80%)

In hot, competitive markets where inventory is tight and investor demand is high, your buyers may accept thinner margins because properties move quickly and holding costs are lower. In these conditions, you can sometimes apply a 75% or even 80% multiplier without losing your buyer.

Example: In a fast-moving urban market with strong rental demand, a buy-and-hold investor might be comfortable at 80% of ARV minus repairs, because they're not planning to resell — they're holding for cash flow, which changes the return calculation entirely.

Use 80% rule cautiously and only when: - You have confirmed buyer interest at that price point - The market data strongly supports the ARV - Repairs are well-defined and low-risk - You've personally verified the comparable sales

When to Use a Lower Multiplier (60%–65%)

In slow or declining markets, or on properties with significant uncertainty (foundation issues, fire damage, unusual floor plans), experienced investors demand deeper discounts. In these cases, consider dropping to 65% or even 60% to account for the additional risk your buyer is absorbing.

The rule of thumb: the more uncertain the deal, the lower your multiplier should be.

Adjusting for Buy-and-Hold Buyers

If your end buyer is a landlord rather than a flipper, their math works differently. They care about monthly cash flow and cap rate, not a resale margin. For buy-and-hold buyers, confirm their target purchase price directly — ask them: "What's the most you'd pay for a rental that rents for $X per month in this zip code?" Then back-calculate your MAO from their number.

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Reverse-Engineering a Deal from Your Buyer's Required Return

One of the most powerful skills you can develop is working the formula backwards — starting from what your buyer needs to earn and calculating your maximum offer from there.

Here's the reverse-engineering process:

Step 1: Ask your buyer: "What's the minimum profit you need to make this deal worth your time?" A typical fix-and-flip investor will say $25,000–$40,000 net profit on a standard deal.

Step 2: Add up all of the buyer's costs: - Purchase price (unknown — this is what you're solving for) - Estimated repairs: $65,000 - Holding costs (estimate 4 months × $1,200/month): $4,800 - Closing costs in and out: ~$8,000 - Agent commissions on resale (6% of $155,000): $9,300 - Required profit: $30,000

Step 3: Subtract everything from ARV: $155,000 − $65,000 − $4,800 − $8,000 − $9,300 − $30,000 = $37,900

That $37,900 is the maximum your buyer can pay for the property and still hit their profit target. Now subtract your assignment fee: $37,900 − $12,000 = $25,900 MAO

Notice this is slightly different from the 70% rule result ($31,500). The reverse-engineering method is more precise because it uses your buyer's actual cost structure. When you have an active buyer relationship and know their numbers, use this method. When you're analyzing deals speculatively before you have a specific buyer, use the 70% rule as your baseline.

Pro tip: Build a simple spreadsheet or use a dedicated deal calculator to run both versions simultaneously. The lower of the two numbers is always your true ceiling.

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Using a Deal Calculator: Your Non-Negotiable Tool

Every serious wholesaler should have a deal calculator — either a custom spreadsheet or a purpose-built real estate investment tool — that automates the MAO formula. Manual calculations work fine for practice, but in a fast-moving deal environment, you need to be able to run numbers in under two minutes.

A solid deal calculator should include fields for: - ARV input with your selected multiplier (adjustable between 60%–80%) - Repair cost input with a built-in contingency percentage - Assignment fee target - Holding cost estimator (months × monthly carrying cost) - Closing cost estimator (percentage of purchase price) - Calculated MAO output - Comparison field showing list price vs. MAO gap

When you're sourcing leads at volume — which is the reality when you're working with a platform like PropLeads.net to access motivated seller leads across multiple zip codes — the ability to pre-screen deals in seconds determines how efficiently you use your time. Run the MAO on every lead before you pick up the phone. If the seller's asking price is already within 20% of your MAO, it's worth a conversation. If they're 80% apart, move to the next lead.

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The Most Common MAO Mistakes (And How to Avoid Them)

Mistake 1: Using an Inflated ARV

The formula is only as reliable as the inputs. If you cherry-pick the highest comp to justify a deal you want to do, you're lying to yourself. Use the conservative end of your comp range, always.

Mistake 2: Underestimating Repairs

You learned in Lesson 2 to add a 10–15% contingency buffer. Do not skip this step when plugging numbers into the MAO formula. A $5,000 repair underestimate translates directly into $5,000 less profit for your buyer — or $5,000 you'll need to cut from your assignment fee.

Mistake 3: Forgetting Your Fee

Some wholesalers run the formula without subtracting their assignment fee, then are surprised when they have no room to get paid. Your fee is not negotiable — it's a cost of the transaction, and it belongs in the formula.

Mistake 4: Letting the List Price Anchor Your Thinking

A seller asking $120,000 does not mean the property is worth $120,000. Run your MAO first. Then look at the list price. Not the other way around.

Mistake 5: Applying One Multiplier to Every Deal

A distressed property in a slow market and a cosmetic flip in a hot market are not the same deal. Adjust your multiplier to reflect the actual risk and market conditions of each individual property.

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Putting It All Together

The MAO formula is not a suggestion — it is a hard boundary. When you submit an offer, you submit at your MAO or below. Not above it because the seller seems motivated. Not above it because you've already spent time on the deal. Not above it because it's "close enough."

Deals that work on paper work in practice. Deals that only work if everything goes perfectly almost never do.

In the next and final lesson of this module, you'll learn how to present your offer to a seller, handle pushback, and structure the contract terms that protect your position — including the inspection contingency and assignment clause that every wholesale contract must contain.