Not financial advice. Mortgage FV Calculator is a software calculator, not a personal-finance product or advisory service. It computes standard financial functions and displays the results for your convenience. Nothing here constitutes, or is intended to constitute, financial, investment, tax, legal, mortgage, credit, or insurance advice. Always consult a qualified professional before making any financial decision.
Charleston mortgage calculator
A median-priced Charleston, SC home at 6.75% over 30 years, with South Carolina property tax of 0.53% and $2,600 a year of homeowners insurance. Every figure below is computed on our amortising engine — nothing is estimated in the browser.
$3,328 a month, all in
Principal and interest are $2,714; escrow and PMI add the rest. Over the full term the loan costs $558,678 in interest. Discounted at 5%, buying here has a net present value of $81,939 ($384,524 in today’s dollars).
Within South Carolina, Charleston is the most expensive of the 4 South Carolina markets covered here. Prices here run 2.00x those in Columbia, the cheapest market listed, so a statewide average badly understates what a purchase costs on this side of the state.
Charleston carries a premium over the rest of South Carolina: a median home here runs $465,000, about 50% above the state median of $310,000. The deposit moves with it, so the same 20% down is $93,000 rather than $62,000.
Prices here have run ahead of rents: the local price index sits at 1.50 against a rent index of 1.30. A market where buying costs rise faster than renting does is one where the rent-vs-buy answer leans later — you need a longer hold before ownership wins.
Monthly cost in Charleston vs comparable rent
Owning is stacked by component; renting is the local median asking rent.
The monthly breakdown
| Median home price | $465,000 |
|---|---|
| Down payment (10%) | $46,500 |
| Loan amount | $418,500 |
| Principal & interest | $2,714/mo |
| Property tax (0.53%) | $205/mo |
| Homeowners insurance | $217/mo |
| PMI while above 80% LTV | $192/mo |
| Total monthly payment | $3,328/mo |
| Comparable rent | $2,080/mo |
What a rate move does to the Charleston payment
| Rate | Principal & interest |
|---|---|
| 5.5% | $2,376/mo |
| 6% | $2,509/mo |
| 6.5% | $2,645/mo |
| 7% | $2,784/mo |
| 7.5% | $2,926/mo |
| 8% | $3,071/mo |
Rent or buy in Charleston?
Against $2,080 a month in rent, over 7 years renting leaves you about $65,256 better off — $54,898 once 2.5% inflation is stripped out. See the South Carolina rent-vs-buy page.
Where these numbers come from
South Carolina medians come from editorial and are refreshed weekly. The Charleston figures index those state medians to the local market, so they track the same feed rather than going stale. Insurance and the state income tax rate are editorial. Treat everything here as a planning estimate, not a quote.