Updated 2026 · Based on median market data for Rapid City, SD
The effective property tax rate in Rapid City, SD is 1.18%. On the median home price of $285,000, that's an annual tax bill of approximately $3,363 — or $280/mo. This is roughly in line with the national average.
Property taxes consume 21.9% of gross rental income in Rapid City. At over 20% of gross rent, taxes are the single largest operating expense and can make or break a deal. Conservative underwriting is essential. Without property taxes, the cap rate would be 4.32% — the 1.18% tax rate reduces it to 3.14%, a drag of 1.18 percentage points.
Property tax bills are based on assessed value, which may differ from market value. In many jurisdictions, assessed values lag behind market prices, meaning your actual tax bill after purchase could increase once the property is reassessed. In SD, check whether purchases trigger automatic reassessment — if so, budget for taxes based on your purchase price, not the seller's current bill. Also investigate whether SD offers any homestead exemptions that landlords would NOT qualify for, as this could increase your effective rate.
With a relatively low tax rate, Rapid City's tax environment is already investor-friendly. Focus your optimization efforts on the other expense categories — insurance, maintenance, and vacancy management — where there's more room to improve returns.