Let's start with the case of a Korean family that purchased a rental property in the Atlanta suburbs. When viewing the property, they calculated the income based solely on the monthly rent, but it wasn't until they received the first-year property tax bill and the home insurance renewal notice that they realized their cash flow was less than half of their initial expectations. This is the first stumbling block when considering rental income.

According to Zumper, as of August 2026, the average rent in Atlanta is around $1,970 per month. At the same time, the Zillow Home Value Index indicates that the average home value in Atlanta is about $380,000. If we calculate the simplest indicator, the total return rate, by dividing the annual rental income of $23,640 by the purchase price of $380,000 and multiplying by 100, we get approximately 6.2 percent. While this number doesn't seem bad at first glance, it's important to remember that this total return rate does not account for property taxes and insurance premiums.

The average effective property tax rate in Georgia is reported to be around 0.9 percent, varying by county and school district. For a $380,000 home, the property tax alone could be around $3,400 annually, and when you add landlord insurance, vacancy losses, maintenance costs, and management fees, operating expenses can often account for nearly half of the total income. If we apply the commonly used 50 percent rule and assume annual operating expenses are $11,820, which is half of the rental income, the net operating income (NOI) would be $11,820, and the cap rate calculated by dividing this by the purchase price would drop to about 3.1 percent. This gap between the total return rate and the cap rate is often overlooked in initial calculations.

When we factor in a real investment scenario with a loan, we get a different number. If the actual cash invested, including the down payment and closing costs, is $90,000, and the pre-tax cash flow after paying the mortgage principal and interest is $3,600 annually, the cash-on-cash return rate would be around 4 percent. The reason the cap rate and cash-on-cash return rate indicate different numbers is due to leverage, and this figure can fluctuate significantly depending on loan terms and interest rates.

• Total Return Rate = Annual Rental Income ÷ Purchase Price x 100
• Cap Rate = Annual Net Operating Income (NOI) ÷ Purchase Price x 100
• Cash-on-Cash Return Rate = Annual Pre-Tax Cash Flow ÷ Actual Cash Invested x 100

According to the commonly used 1 percent rule, the monthly rent should be 1 percent of the purchase price, meaning that for a $380,000 home, the rent should be $3,800 to ensure sufficient cash flow. However, the average rent in Atlanta of $1,970 falls significantly short of this benchmark. Of course, this rule is not an absolute standard but rather a rough guideline. Areas near Johns Creek or Duluth, which are preferred by Korean families, often have high ratings on GreatSchools, indicating steady rental demand, but school district boundaries change frequently, so it's advisable to verify the assigned school for the specific address before signing a lease. If you are moving from another state, it's common to estimate property taxes and insurance based on your previous residence, only to find significant differences in actual costs, so it's wise to address this separately.

The calculation of returns doesn't end here. In addition to the monthly cash flow, you must also consider capital gains from the increase in market value compared to the purchase price, the asset appreciation as you pay down the principal, and tax benefits from depreciation to see the full picture of total returns. Atlanta has seen a steady influx of population in recent years, so many investors are looking at long-term market trends, but it's important to avoid making absolute predictions and to habitually check actual appraisals and rental prices each year. For those who are newly settling in from Korea, starting with renting and observing market trends for a few years before deciding when to buy can be a viable strategy, but this also varies based on individual financial situations and visa circumstances, making it difficult to generalize.

Ultimately, to accurately assess rental income, you should not only look at the total return rate but also consider the cap rate and cash-on-cash return rate to get closer to the actual cash flow you will receive. Additionally, including capital gains and asset appreciation from loan principal repayment will provide a complete picture of total returns. This article is not investment or legal advice, and it is recommended to review specific numbers with an accountant or real estate professional before finalizing any contracts.