Run the numbers, Read the guides.
Real estate, simplified.
Learn property fundamentals with clear articles and run the numbers yourself with 15 professional calculators, from mortgages and cap rates to cash flow, DSCR and BRRRR. Every formula is documented, versioned and tested.
Educational information only, not financial, mortgage, legal, or tax advice. Results are estimates; consult a qualified professional before making decisions.
Explore real estate topics
All topics →Real Estate Basics
A structured learning topic with the key concepts, common mistakes and the calculators that put it into practice.
Buying Property
A structured learning topic with the key concepts, common mistakes and the calculators that put it into practice.
Selling Property
A structured learning topic with the key concepts, common mistakes and the calculators that put it into practice.
Real Estate Investing
A structured learning topic with the key concepts, common mistakes and the calculators that put it into practice.
Rental Property
A structured learning topic with the key concepts, common mistakes and the calculators that put it into practice.
Mortgage & Financing
A structured learning topic with the key concepts, common mistakes and the calculators that put it into practice.
Property Valuation
A structured learning topic with the key concepts, common mistakes and the calculators that put it into practice.
Property Management
A structured learning topic with the key concepts, common mistakes and the calculators that put it into practice.
Commercial Real Estate
A structured learning topic with the key concepts, common mistakes and the calculators that put it into practice.
Popular calculators
All 15 calculators →Financing
Mortgage Calculator
Monthly principal & interest plus a full housing-cost estimate: taxes, insurance, HOA and PMI kept clearly separate.
Valuation
Cap Rate Calculator
Compute the capitalization rate from income, vacancy and expenses, with debt service correctly excluded from NOI.
Rental & Investment
Rental Yield Calculator
Compare gross and net rental yield side by side, with the formulas and expense treatment explained.
Rental & Investment
Rental Property ROI Calculator
Estimate annual return on a rental property, with a clear split between leveraged cash-on-cash return and unleveraged property ROI.
Rental & Investment
Cash on Cash Return Calculator
Measure the pre-tax cash yield on the cash you actually put into a deal, the metric income-focused investors track.
Financing
DSCR Calculator
Debt Service Coverage Ratio = NOI ÷ annual debt service, the lender's core test of whether income can carry the loan.
Financing
Mortgage Amortization Calculator
See the complete repayment schedule, principal vs interest every month, remaining balance, and how extra payments shorten the loan.
Rental & Investment
BRRRR Calculator
Model the full Buy-Rehab-Rent-Refinance-Repeat cycle: cash recovered at refinance, cash left in the deal, and post-refi cash-on-cash return.
Beginner learning path
Browse the blog →Start with the vocabulary
Our real estate basics topic explains terms like equity, escrow and LTV in plain language.
Understand the money
Learn how mortgages amortize and what a payment really contains, then test scenarios yourself.
Analyze a first deal
Run a rental through the ROI and cash flow calculators with realistic assumptions.
Go deeper by topic
Follow the glossary links and related articles inside every post to build durable knowledge.
Real estate investment education
Investing topic →Investing starts with honest arithmetic. Our investing cluster covers net operating income, capitalization rates, cash-on-cash returns, leverage, and strategies like BRRRR, always separating a property's performance from your financing decisions.
- NOI, cap rate and yield, the language of income property
- Cash-on-cash return vs total return, explained without hype
- DSCR and lender logic, so you can speak underwriting fluently
- Worked examples with the full math shown step by step
Investing & Returns
Cap Rate Explained: The Metric That Prices Income Property
The capitalization rate divides a property's NOI by its value. Understand what drives it, how it moves in reverse to price buildings, and why it ignores your mortgage.
Financing & Mortgages
How Mortgage Amortization Works (With the Full Math)
Every fixed payment splits into interest and principal in a changing proportion. Follow a real loan month by month and see why extra payments are so powerful.
Fundamentals
What Is NOI? Net Operating Income Explained From First Principles
Net operating income is the engine of every income-property calculation. Learn what belongs in it, what must stay out, and how to compute it step by step.
Property buying guides
Buying topic →Build a Rental Operating Budget That Survives Reality
Turn a rental pro-forma into a working budget: honest expense lines, reserves, and a break-even test you can monitor against actuals.
1 min read
Cap Rate Explained: The Metric That Prices Income Property
The capitalization rate divides a property's NOI by its value. Understand what drives it, how it moves in reverse to price buildings, and why it ignores your mortgage.
1 min read
Understand Every Line of Your Mortgage Payment
Principal, interest, escrow, PMI, amortization and extra payments: a guided tour of the biggest payment you'll ever make.
1 min read
Country hubs
All countries →United States
Market structure & terminology
United Kingdom
Market structure & terminology
Canada
Market structure & terminology
Australia
Market structure & terminology
Germany
Market structure & terminology
France
Market structure & terminology
Spain
Market structure & terminology
Netherlands
Market structure & terminology
Japan
Market structure & terminology
United Arab Emirates
Market structure & terminology
India
Market structure & terminology
Country hubs publish only verified, general educational information. Legal and tax specifics are deliberately excluded from this release and always reference official sources when added.
Latest articles
View the blog →Rentals & Management · 1 min read
Build a Rental Operating Budget That Survives Reality
Turn a rental pro-forma into a working budget: honest expense lines, reserves, and a break-even test you can monitor against actuals.
Investing & Returns · 1 min read
Cap Rate Explained: The Metric That Prices Income Property
The capitalization rate divides a property's NOI by its value. Understand what drives it, how it moves in reverse to price buildings, and why it ignores your mortgage.
Financing & Mortgages · 1 min read
Understand Every Line of Your Mortgage Payment
Principal, interest, escrow, PMI, amortization and extra payments: a guided tour of the biggest payment you'll ever make.
Investing & Returns · 1 min read
Analyze a Rental Property in Seven Steps
A complete, repeatable walkthrough: from gathering honest inputs to a defensible NOI, cash flow and return picture, using the same sequence professionals use.
Rentals & Management · 1 min read
Vacancy Assumptions: The Number That Quietly Decides Your Deal
Every rental analysis starts with a vacancy assumption, and wishful thinking there corrupts everything downstream. Here's how to choose one honestly.
Fundamentals · 1 min read
Beyond the Mortgage: Taxes, Insurance and the True Cost of Ownership
Principal and interest are only part of the payment. Here's the full stack of recurring ownership costs, and how to estimate each one before you buy.
Featured educational resources
Glossary →The glossary
Plain-language definitions of every term used across the platform, cross-linked to calculators.
The blog
Every published article in one feed: explainers, step-by-step walkthroughs and worked examples.
Formula library
Every calculator formula, versioned and documented with worked examples.
Editorial standards
How content is researched, fact-checked, reviewed and kept up to date.
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