Buying Mortgage calculator

What would my monthly payment be?

Plug in a price and your down payment. You'll see principal and interest, plus a property tax estimate for primary homes in Charleston, Berkeley and Dorchester counties.

$120,000

7.40% is the national average for a 30-year fixed loan (Freddie Mac, Oct. 15, 2026). Your rate depends on your credit, loan type and points.

Not sure which applies? Town limits and county lines zigzag here. Ask me and I'll look up the exact tax district.
Estimated monthly payment

$4,016

on a $480,000 loan

Principal & interest
$3,323
Property tax est. $2,266/yr
$189
HOA dues
$0
Home insurance
$0

Insurance isn't included until you enter it. Near the coast it can be a big part of the payment, and some homes also need flood insurance.

Want the full picture?

I'll pull the exact tax district for a specific home, help you think through insurance and flood zones, and introduce you to local lenders who can quote your real rate.

Send me your numbers
How the tax estimate works

Why South Carolina taxes look low for your own home

When a home is your legal residence, South Carolina assesses it at 4% of its value instead of 6%, and you don't pay the school operating portion of the tax bill. That's why a primary home here usually costs well under 1% of its price in property tax each year.

The estimate uses each area's published tax year 2025 rates from the county auditors, less the local sales tax credits, plus the usual flat county or town fees for trash and stormwater. The county reassesses a home's value when it sells, so the purchase price is a fair stand-in.

  • You have to apply for the 4% rate after you close. Until it's approved, your bill is figured at 6% and includes school operating taxes, which can roughly double it or more.
  • Second homes and rentals are taxed at 6%, so this estimate is for a home you'll live in.
  • Some neighborhoods add their own fees or special districts that aren't included here.
  • Rates are reset every year, usually in the fall. Bills follow the calendar year and are due in January.
Get the full picture

Let me run the real numbers with you

Send me what you entered and I'll follow up with a closer estimate for the home or area you have in mind, including the exact tax district and what to expect for insurance.

I'm a REALTOR®, not a lender. Calculator results are estimates for planning only. Your lender's Loan Estimate is the number to rely on.

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