How to Track Property Profitability: Key Metrics for Landlords

"How much does the property actually earn me?" – A question to which surprisingly many landlords do not know the exact answer. They know how much they collect in rent, but the actual return? That's another matter.

In this article, I'll show you how to properly measure real estate profitability, what metrics to track, and how to make decisions based on data.

Why measure profitability

Reasons to track

Objective decision-making: Instead of "I think it's working," you'll know it's working.

Optimization: You'll find, where you are losing money and where there is potential.

Comparison of investments: Find out if the money would make more money elsewhere.

Planning: Prediction of future income and expenses.

What to measure

Basic metrics:

• Gross income
• Net income
• Cash flow
• Profitability (ROI, cap rate)

Advanced metrics:

• IRR (Internal Rate of Return)
• Payback period
• Ratio indicators

Gross vs. net income

Gross income

Definition: All income from real estate before deducting expenses.

Components:

• Rent
• Parking fees
• Cellars
• Other fees

Example:

• Rent: 15,000 Kč/month
• Parking: Kč 1,500/month
• Gross income: Kč 16,500/month = Kč 198,000/year

Net operating income (NOI)

Definition: Gross income minus operating expenses (excluding mortgage payments).

Operating expenses:

• Tax from real estate
• Insurance
• Management and maintenance
• Repair fund
• Vacancy reserve

Example:

• Gross income: 198,000 Kč/year
• Property tax: 3,000 Kč
• Insurance: 4,000 Kč
• Maintenance: 10,000 Kč
• Administration: Kč 12,000
• NOI: Kč 169,000/year

Cash flow

Definition: Net operating income minus mortgage payments.

Example:

• NOI: Kč 169,000/year
• Mortgage payments: 120 000 Kč/year
• Cash flow: 49,000 Kč/year = 4,083 Kč/month

Key profitability metrics

1. Gross profitability

Formula: Gross profitability = (Annual gross income / Purchase price) x 100

Example:

• Purchase price: Kč 4,000,000
• Gross income: Kč 198,000/year
• Gross yield: 4.95%

Usage: Quick comparison of real estate, does not include costs.

2. Cap Rate capitalization)

Formula: Cap Rate = (NOI / Current property value) x 100

Example:

• Property value: Kč 4,500,000
• NOI: Kč 169,000/year
• Cap Rate: 3.76%

Usage: Standard metric for comparing profitability.

CZ benchmarks:

• Apartments in Prague: 2.5–4%
• Apartments outside Prague: 4–6%
• Commercial real estate: 5–8%

3. Cash-on-Cash Return

Formula: Cash-on-Cash = (Annual cash flow / Own invested capital) x 100

Example:

• Equity (down payment + costs): Kč 1,200,000
• Annual cash flow: Kč 49,000
• Cash-on-Cash: 4.08%

Usage: Profitability of your own money (not the entire investment).

4. ROI (Return on Investment)

Formula: ROI = ((Net profit for the period + Change in value) / Initial investment) x 100

Example (for 1 year):

• Initial investment: Kč 1,200,000
• Cash flow: Kč 49,000
• Real estate appreciation: Kč 180,000
• ROI: (49,000 + 180,000) / 1,200,000 = 19.1%

Usage: Total profitability including appreciation.

5. Payback period

Formula: Payback period = Initial investment / Annual cash flow

Example:

• Investment: Kč 1,200,000
• Annual cash flow: Kč 49,000
• Payback: 24.5 years

Usage: When will your investment return purely from cash flow.

Practical monitoring

What to record monthly

Income:

• Rent (paid/not paid)
• Other income

Expenses:

• Mortgage payments
• Insurance
• Maintenance and repairs
• Administration
• Other expenses

Annual overview

Items:

• Total revenues
• Total expenses
• NOI
• Cash flow
• Occupancy
• Cap rate
• Cash-on-cash

Tools

Tables:

• Excel or Google Sheets
• Self-tracking

Specialized software:

• Grento (comprehensive solution)
• Accounting software
• Property management systems

Occupancy and downtime

Occupancy rate

Formula: Occupancy = (Occupied months / 12) x 100

Target value: 95% or more (max. 2-3 weeks of downtime per year).

Vacancy calculation

Realistic approach: Allow for 5-10% vacancy in calculations.

Example:

• Theoretical income: Kč 198,000
• Expected occupancy: 95%
• Realistic income: Kč 188,100

Minimization vacancies

Strategy:

• Competitive price
• Quality maintenance
• Quick response to problems
• Good relations with tenants

Profitability optimization

Increase income

Options:

• Rent adjustment (inflation)
• Adding value (parking, cellar)
• Short-term rental (higher rates)
• Refinancing under better conditions

Cost reduction

Options:

• Preventive maintenance (cheaper than repairs)
• Energy savings
• Competitive insurance
• Effective management

Capital investments

When pays off:

• Bathroom renovation = higher rent
• Insulation = lower costs
• New kitchen = better tenants

Calculation: Cost of investment vs. increase in annual income

Comparison with alternatives

Investment benchmark

Investment	Expected return
Savings Account	1-2%
Government bonds	3-4%
Stock index	6-10%
Property (cap rate)	3-6%
Real Estate (Total ROI)	8-15%

What to consider

• Risk
• Liquidity
• Time consumption
• Tax optimization
• Leverage

Tax impact

Depreciation

Depreciation reduces the tax base, but not cash flow.

Example:

• Depreciation building: Kč 50,000/year
• Tax savings depend on the applicable current tax rate; the amount shown is illustrative only.

Mortgage interest

Interest is a tax-deductible expense.

Effective return after tax

Calculate the net return after deduction of income tax.

Summary: Monitoring Checklist

Monthly:

• Record of income and expenses
• Check payments
• Maintenance monitoring

Quarterly:

• Cash flow analysis
• Comparison with plan
• Identify trends

Annually:

• Complete statement of income and expenses
• Calculation of all metrics
• Performance evaluation
• Planning for the next year

Key metrics:

• Gross return (quick comparison)
• Cap rate (standard metric)
• Cash-on-cash (return on equity)
• Cash flow (real money in your pocket)

Tracking profitability is not only for professional investors. Every landlord should know how much their property is really earning - and how to improve it.

How Grento can help you

Grento automatically calculates the profitability of each property and displays an overview of the entire portfolio on one dashboard.

> Czech-law scope and editorial note: Legal, tax, accounting, tenancy, service-charge, condominium, metrology, insurance and data-protection statements in this article refer to the Czech Republic and the rules effective for the relevant date. Figures and examples are illustrative, not legal or tax advice. Verify current rules with the relevant Czech authority or a qualified adviser.