Acquisitions & Rehab Underwriting Tool

BRRRR & Fix-and-Flip 70% MAO Rule & DSCR Refinance Calculator

Instantly model your Maximum Allowable Offer (70% ARV rule), hard-money loan carry costs, flip net profit, and 30-year DSCR cash-out refinance cash left in deal.

After Repair Value / ARV ($)

Purchase Price ($)

Rehab Budget ($)

Projected Monthly Rent ($)

70% Rule Max Offer (MAO)

$179,000

Below MAO Cap

All-In Cost Basis

$228,800

Incl. ~4% closing/carry

75% LTV Refi Loan

$240,000

Cash Left: $0 (Infinite CoC)

Est. Flip Net Profit

$65,600

After 8% agent/closing

Workbook #2 • 2027 Edition B2B Excel OS

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