Rental Yield Calculator

What rental yield means for investors

Rental yield is a simple way to compare rental income to the cost of acquiring a property. At a high level, yield helps you answer a practical question: how hard is this property working for the cash you put into it? It’s not a perfect metric, but it’s a fast screening tool—especially when you’re comparing different cities, property types, or price ranges.

Many investors talk about yield in multiple ways. A gross yield (also called gross rent multiplier inverses) compares annual rent to the property’s cost basis, without subtracting vacancy or expenses. A net yield accounts for operating costs and vacancy. A cap rate focuses on NOI and intentionally ignores financing so you can compare properties on an unlevered basis.

In practice, you’ll often start with gross yield to filter deals quickly, then move to cap rate and cash-on-cash return once you have realistic expense assumptions. This calculator is designed to walk that progression: you can start with rent and price, then layer in vacancy, operating expenses, and finally financing.

Gross yield vs cap rate vs cash-on-cash

Gross yield is straightforward: annual gross income divided by total cost basis. It’s useful because it’s easy to compute and hard to manipulate. But gross yield can be misleading when expenses vary a lot—two properties with the same rent might have very different taxes, insurance, HOA costs, or maintenance needs.

Cap rate uses net operating income (NOI) instead of gross income. NOI subtracts operating expenses and vacancy, but excludes financing. That’s important because financing is a choice: the same property can have very different cash flow depending on down payment, rate, and term.

Cash-on-cash return brings financing back into the picture. It compares annual pre-tax cash flow to the cash you actually invested. This is often the metric that matters most for small investors who care about liquidity and monthly cash flow. If you’re using leverage, cash-on-cash can be higher than cap rate when mortgage payments are manageable—but it can also be lower if debt service eats most of the NOI.

Modeling vacancy and realistic income

Vacancy is one of the simplest ways to make your analysis more conservative. Even in strong rental markets, units can sit empty between tenants, and you may experience non-payment or extended turnovers. A vacancy assumption of 3%–8% is common for many long-term rentals, but it depends on property class, market strength, and your management approach.

The key is to apply vacancy to income before you calculate management fees if your manager charges based on collected rent. In this calculator, vacancy reduces effective income, and management is calculated on effective income. That’s a conservative approach that approximates real-world fee structures.

If your property includes additional income sources (parking, laundry, storage), include them as “other income.” These sources can improve NOI, but they often come with extra maintenance or turnover considerations—so don’t forget to adjust expenses if needed.

Operating expenses: the most common misses

Expense underestimation is the most common reason rental projections look better on paper than they perform in real life. Property taxes and insurance are usually easy to estimate. The harder part is reserves and long-run maintenance. That’s why many investors model repairs, maintenance, and capex separately.

Maintenance covers recurring small items (plumbing fixes, paint, landscaping). Repairs may be more reactive. Capex is for big replacements: roof, HVAC, appliances, flooring, exterior paint. If you don’t reserve for capex, you may have “good” cash flow for a few years and then face a huge expense that wipes out multiple years of profit.

Management fees are also commonly overlooked by self-managing investors. Even if you manage the first property, pricing in management helps you compare deals fairly and reflects your time cost. HOA and utilities vary by market and property type (single-family vs condo vs multi-family), so include them when applicable.

Financing and leverage: why cash flow changes

Financing can turn a high-cap-rate deal into a low-cash-flow deal if the mortgage payment is large relative to NOI. Conversely, a modest cap rate can still produce strong cash-on-cash returns when the down payment is larger or the rate is lower.

The calculator uses a standard amortization payment for principal and interest (P&I). It treats property tax and insurance as operating expenses so that NOI is financing-independent, and then subtracts the mortgage payment to compute cash flow.

To use leverage thoughtfully, stress test the deal: increase vacancy, increase repairs/capex, and run scenarios with higher rates. A deal that only works under perfect assumptions often becomes a headache in the real world.

Frequently Asked Questions

Privacy and methodology

This calculator runs entirely in your browser. Your values aren’t sent to a server. The formulas are intentionally transparent: NOI is effective income minus operating expenses, cap rate is NOI divided by total cost basis, and cash-on-cash return is annual pre-tax cash flow divided by cash invested.