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About LandlordCalc

Last reviewed April 2026

LandlordCalc is built and maintained as a free resource for single-family rental investors. The goal is simple: a calculator that works the way real investors actually think about deals, not the way most online calculators oversimplify them. Every metric on one screen, side by side, with live mortgage rate data from the Federal Reserve so the numbers reflect today's market and not last year's assumptions.

Why LandlordCalc Exists

Most rental property calculators online give you a cash flow number and call it a day. That's not how experienced investors evaluate deals. When you're looking at a single-family rental, you want to see Cap Rate, Cash on Cash Return, NOI, DSCR, the 1 percent Rule, the 50 percent Rule, and a 5-year ROI projection all on one screen, side by side, with the assumptions baked in but adjustable. That's what LandlordCalc does, and it's free for everyone.

The calculator also reflects today's market, not yesterday's. LandlordCalc pulls live mortgage rate data directly from the Federal Reserve Economic Database (FRED). When you click "Use Current Rate," you're getting the actual 30-year fixed rate as of right now. The AI investment commentary also adjusts its return benchmarks based on current rate environment, because what looks like a great deal in a 3 percent rate environment may be a marginal one in a 7 percent environment.

Editorial Standards

Every article on this site is written by a working real estate professional with 45+ years in the business and over 2,000 transactions personally bought, sold, or developed. The numbers and benchmarks come from MLS data, FRED, the Bureau of Labor Statistics, and decades of actually doing this work. We don't accept paid placements, we don't run ads, and we don't recommend products we don't use ourselves. If something is wrong, the article gets updated and the revision date is noted.

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