1% Rule Calculator & Checklist: Spot Profitable Rentals Fast

You’re looking at a listing and wondering “Will this property actually make money?” In the next few seconds you’ll learn a single‑page method that tells you if the rent hits the 1% rule—no deep‑dive cash‑flow model required. Grab the free spreadsheet, plug in the price and rent, and get a green or red signal instantly.

Why the 1% Rule Gets Misused

Many investors waste hours building elaborate models before they even know if a property passes the 1% rule rental property screen. The most common errors are:

• Mixing gross rent with net rent – the rule compares gross monthly rent to the purchase price, not after‑expenses rent.
• Over‑engineering the formula – adding mortgage, taxes, and repairs before the quick filter.
• Inconsistent checklists – forgetting taxes, HOA fees, or market stability checks.

These mistakes lead to analysis paralysis, missed opportunities, and costly false positives.

The One‑Page 1% Rule Calculator

The solution is a three‑column spreadsheet that does the math for you in seconds.

How it works:

1. Enter the asking price in A.
2. Type the realistic gross rent you could charge in B.
3. The formula in C instantly returns ✅ Yes if rent ≥ 1 % of price, otherwise ❌ No.

Copy the row for every property you evaluate and you have an instant “go/no‑go” screen.

Quick 1% Rule Screening Checklist

After the calculator gives you a green light, run this short checklist to avoid hidden red flags:

• ✅ Verify the rent estimate with at least two comparable listings.
• ✅ Confirm the neighborhood is stable or growing for rentals.
• ✅ Identify any major repairs that could force the rent lower.
• ✅ Ensure the HOA (if any) doesn’t restrict rent increases.

Following the checklist keeps you focused on the big picture while still catching deal‑breakers the simple 1% screen might miss.

Real‑World Example

I tested the tool on a duplex priced at $150,000 with a projected rent of $1,600. The calculator displayed ✅ Yes (1.07 % of price), giving me confidence to submit an offer the same day. No spreadsheet gymnastics, just a clear signal that the property passed the first filter.

Next Steps

1. Download the free 1% Rule calculator (Google Sheets or Excel).
2. Run every prospective rental through the gross‑rent check.
3. If it passes, move to a detailed cash‑flow analysis; if not, walk away and save time.

The 1% rule isn’t a guarantee of profit, but it’s a reliable gatekeeper that eliminates most overpriced deals before you drown in numbers.