The quick read: A DSCR loan on a Columbia, South Carolina rental is sized on the property's rent divided by the full monthly payment, and a consumer guide puts the usual floor at around 1.25, though each lender sets its own. In Columbia the tax line can decide whether a deal clears that floor. South Carolina assesses a rental at 6% of fair market value rather than the 4% an owner-occupant pays, a purchase resets fair market value, and a 25% exemption on the new value applies only if you notify the county assessor before January 31 of the first tax year you claim it. Miss the notice and the DSCR drops.
How does a DSCR loan work on a rental property in Columbia, South Carolina?
A DSCR loan on a Columbia rental qualifies the property rather than your personal income: the lender divides monthly rent by the full monthly payment, including principal, interest, taxes and insurance, and NerdWallet's DSCR guide (updated Jul 17, 2026) says a ratio of around 1.25 or higher is generally needed.
NerdWallet's guide says lenders verify the ratio through an appraisal, generally want a credit score of at least 620, a down payment of at least 20% and three to six months of payments in reserve, and that most of these loans carry prepayment penalties. It says DSCR loans need a rent-ready property and can't be used to buy a fixer-upper or a primary residence.
Typical minimum DSCR (NerdWallet, updated Jul 17, 2026): around 1.25 or higher Typical minimum credit score (NerdWallet, updated Jul 17, 2026): at least 620 Typical down payment (NerdWallet, updated Jul 17, 2026): at least 20% Typical reserves (NerdWallet, updated Jul 17, 2026): three to six months of mortgage payments
The loan is business-purpose credit. The CFPB's official commentary to Regulation Z says credit to acquire, improve, or maintain rental property that is not owner-occupied is deemed to be for business purposes, and that a property the owner expects to occupy for more than 14 days in the coming year cannot be considered non-owner-occupied. The DSCR glossary entry covers the ratio, and the DSCR calculator runs it.
Why does South Carolina's 6% assessment ratio matter for a Columbia DSCR loan?
South Carolina's 6% assessment ratio matters because taxes sit inside the payment a DSCR lender divides into rent, and state law assesses a rental at 6% of fair market value, half again the 4% ratio an owner-occupant pays on the same house, while a purchase resets the fair market value the ratio applies to.
Section 12-43-220 of the South Carolina Code taxes the owner-occupied legal residence on an assessment equal to 4% of fair market value and all other real property not otherwise provided for at 6%. A Rosewood or Shandon house bought as a rental sits in the 6% class. If the seller lived in the house, the tax bill on the listing reflects the 4% ratio and is the wrong number to underwrite.
Section 12-37-3140 says fair market value applies for the later of the base year, December 31 of the year in which an assessable transfer of interest occurred, an appeal, or a countywide reassessment. A sale is an assessable transfer of interest, so your purchase price becomes the starting point for the new value.
Owner-occupied residence ratio (S.C. Code 12-43-220): 4% of fair market value Rental and other real property ratio (S.C. Code 12-43-220): 6% of fair market value Reassessment date after a sale (S.C. Code 12-37-3140): December 31 of the transfer year
How does the January 31 exemption notice change a Rosewood duplex's DSCR?
The January 31 notice changes a Rosewood duplex's DSCR because South Carolina allows a rental that stays in the 6% class to exempt 25% of its new post-sale fair market value, but only if the owner notifies the county assessor before January 31 of the first tax year claimed, and without it the tax line runs about a third higher.
Section 12-37-3135 allows an exemption equal to 25% of the ATI fair market value for a parcel subject to the 6% ratio that undergoes an assessable transfer of interest. The exemption value cannot fall below the current fair market value on the assessor's books. The exemption does not apply unless the owner or the owner's agent notifies the county assessor that the property will be subject to the 6% ratio before January 31 for the tax year the owner first claims it, and no further notice is needed while the property stays at 6%.
ATI exemption (S.C. Code 12-37-3135): 25% of ATI fair market value Notice deadline (S.C. Code 12-37-3135): before January 31 of the first claimed tax year Floor on the exemption (S.C. Code 12-37-3135): not below current fair market value
Illustrative example (our arithmetic, assumed rates): you buy a Rosewood duplex for $320,000 with two units renting at $1,150 each, $2,300 a month in total. Principal, interest and insurance come to $1,300 a month. Taxes are modeled at an assumed 400 mills, an illustration and not the city's or Richland County's rate, and the assessor's current value is assumed to be below $240,000.
Table: A Rosewood duplex DSCR with and without the January 31 notice
| Line | Notice filed on time | Notice missed |
|---|---|---|
| Line Taxable value | Notice filed on time $240,000 | Notice missed $320,000 |
| Line Assessed value at 6% | Notice filed on time $14,400 | Notice missed $19,200 |
| Line Annual tax at assumed 400 mills | Notice filed on time $5,760 | Notice missed $7,680 |
| Line Monthly tax | Notice filed on time $480 | Notice missed $640 |
| Line Full monthly payment | Notice filed on time $1,780 | Notice missed $1,940 |
| Line DSCR on $2,300 rent | Notice filed on time About 1.29 | Notice missed About 1.19 |
Every figure is an assumption chosen to show the mechanism, not Columbia market data. The same duplex at the same rent clears a 1.25 floor with the notice and misses it without, and the gap is $160 a month for as long as you own it. Ask the Richland County assessor which tax year your notice covers, and file it in the month you close.
Can short-term rental income count on a Columbia DSCR loan?
Short-term rental income can count only where Columbia's zoning allows the use, and the city's Planning and Development page says a short-term rental in a residential base zoning district may only sit on a parcel fronting a street with four through lanes classified as a Major Arterial, Minor Arterial or Collector.
The same page says Ordinance No. 2025-107 allows short-term rentals in all Mixed-Use, Activity Center and Corridor, and Commercial zoning districts and in the Employment Campus District, and that Ordinance No. 2026-013, approved on March 3, 2026, lets owner-occupied units in residential districts operate as short-term rentals without the four-lane street requirement. Operating one also requires a city short-term rental permit and a business license.
For an investor, the result is narrow. A non-owner-occupied house on an interior Rosewood or Shandon street generally cannot be a short-term rental, so its DSCR has to stand on long-term rent. The owner-occupied exception does not help a DSCR borrower, because a property the owner occupies for more than 14 days a year is not a non-owner-occupied business-purpose rental under the CFPB's commentary.
Residential-district STR location rule (City of Columbia, Ordinance 2025-107): parcel fronting a four-lane Major Arterial, Minor Arterial or Collector Owner-occupied exception (Ordinance 2026-013, approved March 3, 2026): exempt from the four-lane requirement
How do Five Points, Rosewood, Shandon and BullStreet differ for a DSCR lender?
Five Points, Rosewood, Shandon and BullStreet differ because each changes which rent a lender will count: student leasing near Five Points raises the annualization question, Rosewood and Shandon rest on conventional long-term leases, and new BullStreet District buildings set the comparable rents an appraiser weighs against older stock.
Near Five Points and the University of South Carolina, by-the-bedroom leases that run for the academic year produce less annual rent than twelve-month leases at the same bedroom rate, and a lender divides a monthly figure into a monthly payment. Ask each lender whether it uses the signed leases, the appraiser's market rent or the lower of the two. For buildings of 5 to 50 units, Freddie Mac's Conventional Small term sheet (4/26) excludes student properties, so a building leased by the bed to undergraduates usually needs a bank or debt-fund loan rather than an agency one.
Rosewood and Shandon duplexes and small houses are the cleaner DSCR case: long-term leases, a 6% tax class and the exemption notice above. New supply is the comparison an appraiser will draw. The Census Bureau's 2025 annual building-permit file for the Columbia, SC metro lists 4,969 one-unit buildings, 29 two-unit buildings with 58 units, 47 three- and four-unit buildings with 179 units, and 20 buildings of five or more units with 864 units, about 43.2 units per building by our arithmetic. These are metro permit authorizations, not completions.
5+ unit buildings permitted, Columbia metro, 2025 (Census BPS): 20 Units in those buildings (Census BPS, 2025): 864 Three- and four-unit buildings permitted (Census BPS, 2025): 47, with 179 units
How do you get lenders competing for a Columbia DSCR loan?
Lenders compete on a Columbia DSCR loan when each one sees the same complete package, including a rent roll with lease dates, a tax estimate at the 6% ratio on your price, a note on whether the January 31 exemption notice will be filed, and an insurance quote, so their quotes differ on price and terms instead of on assumptions.
YieldStack is a commercial mortgage brokerage. Software matches the deal against 20,000+ loan programs and compares the options; human brokers structure the deal, negotiate on the borrower's side and carry it toward closing. YieldStack reports a median first offer in under an hour, from an institutional lender. Every credit decision is made by the lender; YieldStack arranges the introductions and negotiates on the borrower's side, and no loan, rate, or closing is guaranteed.
For a Columbia rental, the package that gets clean quotes includes:
- Rent roll by unit or bedroom, with lease start and end dates
- Current tax bill, the ratio it reflects, and your estimate at 6% on the purchase price
- Whether you will file the 12-37-3135 notice, and for which tax year
- Zoning district and street classification if any short-term rental income is planned
- Insurance quote and the purchase contract or payoff statement
- Target loan amount, hold period and the prepayment penalty you can accept
When it is ready, send the Columbia deal for review. It costs Zero upfront to submit a deal and review offers; YieldStack's broker fee is 0.50–1.00% of the loan amount and is paid only at closing. Local context is on the Columbia market hub and the South Carolina market hub.
The bottom line
A DSCR loan on a Columbia rental is sized on rent over the full payment, with around 1.25 a common floor. Underwrite taxes at South Carolina's 6% rental ratio on your purchase price, file the 25% exemption notice before January 31, and count short-term rental income only where the city's zoning rule allows it.