IRR is more useful for long-term investments, but is best when triangulated with other measurements. Other calculators. For assistance calculating the compound annual growth rate of an investment, see the CAGR calculator. Alternatively, to calculate the interest rate on a loan, try the interest rate calculator. In economics, nominal value is measured in terms of money, whereas real value is measured against goods or services. A real value is one which has been adjusted for inflation, enabling comparison of quantities as if the prices of goods had not changed on average. Changes in value in real terms therefore exclude the effect of inflation.

During my thirty-year tenure as a realtor and investment real estate specialist, I encountered far too many colleagues and real estate investors that had little-to-no understanding about the real estate investing terms, rates of return and formulas such as these I'm providing in the list below.

It seemed like a good idea, therefore, to briefly discuss them under one of two categories: basic and advanced. The basic represents the terms and formulas that you (as an agent or investor) should know at the very least, and the advanced takes it a step further for those of you who are seriously planning to become more actively engaged with real estate investing.

Note All formulations are annualized.

Basic

1. Gross Scheduled Income (GSI)

GSI is the annual rental income a property would generate if 100% of all space were rented and all rents collected. If vacant units do exist at the time of your real estate analysis then include them at their reasonable market rent.

Rental Income (actual)
plus Vacant Units (at market rent)
= Gross Scheduled Income

2. Gross Operating Income (GOI)

GOI is gross scheduled income less vacancy and credit loss plus income derived from other sources such as coin-operated laundry facilities. Consider GOI as the amount of rental income the real estate investor actually collects to service the rental property.

Gross Scheduled Income
less Vacancy and Credit Loss
plus Other Income
= Gross Operating Income

3. Operating Expenses

Operating expenses include those costs associated with keeping a property operational and in service. These include property taxes, insurance, utilities, and routine maintenance. They do not include payments made for mortgages, capital expenditures or income taxes.

4. Net Operating Income (NOI)

NOI is a property's income after being reduced by vacancy and credit loss and all operating expenses. NOI is one of the most important calculations to any real estate investment because it represents the income stream that subsequently determines the property's market value – that is, the price a real estate investor is willing to pay for that income stream.

Gross Operating Income
less Operating Expenses
= Net Operating Income

5. Cash Flow Before Tax (CFBT)

CFBT is the number of dollars a property generates in a given year after all expenses but in turn still subject to the real estate investor's income tax liability.

Net Operating Income
less Debt Service
less Capital Expenditures
= Cash Flow Before Tax

6. Gross Rent Multiplier (GRM)

GRM is a simple method used by analysts to determine a rental income property's market value based upon its gross scheduled income. You would first calculate the GRM using the market value at which other properties sold, and then apply that GRM to determine the market value for your own property.

Market Value
÷ Gross Scheduled Income
= Gross Rent Multiplier

Then,

Gross Scheduled Income
x Gross Rent Multiplier
= Market Value

7. Cap Rate

This popular return expresses the ratio between a rental property's value and its net operating income. The cap rate formula commonly serves two useful real estate investing purposes: To calculate a property's cap rate, or by transposing the formula, to calculate a property's reasonable estimate of value.

Net Operating Income
÷ Market Value
= Cap Rate

Or,

Net Operating Income
÷ Cap rate
= Market Value

8. Cash on Cash Return (CoC)

CoC is the ratio between a property's cash flow in a given year and the amount of initial capital investment required to make the acquisition (e.g., mortgage down payment and closing costs). Most investors usually look at cash-on-cash as it relates to cash flow before taxes during the first year of ownership.

Cash Flow Before Taxes
÷ Initial Capital Investment
= Cash on Cash Return

9. Operating Expense Ratio (OER)

OER expresses the ratio (as a percentage) between a real estate investment's total operating expenses dollar amount to its gross operating income dollar amount.

Operating Expenses
÷ Gross Operating Income
= Operating Expense Ratio

10. Debt Coverage Ratio (DCR)

DCR is a ratio that expresses the number of times annual net operating income exceeds debt service (i.e., total loan payment, including both principal and interest).

Net Operating Income
÷ Debt Service
= Debt Coverage Ratio

DCR results:

Less than 1.0 - not enough NOI to cover the debt
Exactly 1.0 - just enough NOI to cover the debt
Greater than 1.0 - more than enough NOI to cover the debt

11. Break-Even Ratio (BER)

BER is a ratio some lenders calculate to gauge the proportion between the money going out to the money coming so they can estimate how vulnerable a property is to defaulting on its debt if rental income declines. BER reveals the percent of income consumed by the estimated expenses.

(Operating Expense + Debt Service)
÷ Gross Operating Income
= Break-Even Ratio

BER results:

Less than 100% - expenses consuming less than available income
Greater than 100% - expenses consuming more than available income

12. Loan to Value (LTV)

LTV measures what percentage of a property's appraised value or selling price (whichever is less) is attributable to financing. A higher LTV benefits real estate investors with greater leverage, whereas lenders regard a higher LTV as a greater financial risk.

Loan Amount
÷ Lesser of Appraised Value or Selling Price
= Loan to Value

Advanced

13. Annual Depreciation Allowance

Annual depreciation allowance is the amount of tax deduction allowed by the tax code that investment property owners may take each year until the entire depreciable asset is written off.

To calculate, you must first determine the depreciable basis by computing the portion of the asset allotted to improvements (land is not depreciable), and then amortizing that amount over the asset's useful life as specified in the tax code: Currently 27.5 years for residential property and 39 years for nonresidential.

Property Value
x Percent Allotted to Improvements
= Depreciable Basis

Then,

Depreciable Basis
÷ Useful Life
= Annual Depreciation Allowance

14. Mid-Month Convention

This adjusts the depreciation allowance in whatever month the asset is placed into service and whatever month it is disposed. The current tax code only allows one-half of the depreciation normally allowed for these particular months.

For instance, if you buy in January, you will only get to write off 11.5 months of depreciation for that first year of ownership. Likewise, say you sell in January, then you will only get to writeoff half-month depreciation for that final year of ownership.

15. Taxable Income

Money In Real Terms Calculation Formula

Taxable income is the amount of revenue produced by a rental on which the owner must pay Federal income tax. Once calculated, that amount is multiplied by the investor's marginal tax rate (i.e., state and federal combined)