Learn how South Carolina’s ATI Property Tax Exemption can reduce property taxes after a purchase—and why 2025 buyers must act by Jan. 30, 2026.

Learn how South Carolina’s ATI Property Tax Exemption can reduce property taxes after a purchase and why 2025 buyers must act by Jan. 30, 2026.

A Little-Known South Carolina Tax Strategy That Can Lower Your Property Taxes

When buyers think about closing costs and ongoing homeownership expenses, property taxes usually land somewhere in the background until that first bill arrives.

Here’s the good news: South Carolina offers a little-known tax provision that can meaningfully reduce property taxes after a purchase, especially for second homes, investment properties, and commercial real estate.

It’s called the Assessable Transfer of Interest (ATI) Property Tax Exemption, and if you purchased qualifying property in 2025, timing matters.

What Is the ATI Property Tax Exemption?

The ATI Exemption is a provision in South Carolina state law supported by South Carolina Realtors designed to protect property owners from sudden spikes in property taxes after a transfer of ownership.

Normally, when a property sells, the county reassesses it at the current market value, which often results in a higher taxable value and higher taxes.

The ATI exemption helps soften that jump.

Instead of taxing the full increase immediately, the exemption reduces the taxable increase by up to 25%, offering real savings for qualifying buyers.

Why ATI Matters More Than You Think

In a market where prices have risen over time, reassessment can be one of the biggest surprises for new owners particularly those buying:

• Second homes

• Vacation properties

• Investment or rental properties

• Commercial real estate

These properties are typically taxed at the 6% assessment rate, and that’s where ATI can make a meaningful difference.

Without ATI, property taxes are calculated entirely on the new market value.
With ATI, a portion of that increase is temporarily shielded.

That’s not a loophole it’s a legislated tax relief tool.

Who Qualifies for the ATI Exemption?

You may qualify if:

• You purchased a 6% assessed property in 2025

• The purchase triggered a reassessment due to transfer of ownership

Other types of ownership changes may also qualify, but those scenarios can vary. When in doubt, it’s always smart to consult your CPA or local assessor.

How the Numbers Actually Work

Here’s a simplified example to show why ATI matters:

• Previous taxable value: $200,000

• New market value after sale: $300,000

• Increase due to reassessment: $100,000

• ATI exemption (25% of increase): $25,000

New taxable value after ATI: $275,000

That $25,000 reduction can translate into real, recurring tax savings especially over time.

How (and When) to Apply

This part is critical.

👉 For properties purchased in 2025, ATI applications must be filed by January 30, 2026.

To apply:

• Contact your County Assessor’s Office, or

• Visit their official website for ATI exemption forms and instructions

ATI is not automatic. If you miss the deadline, the opportunity may be lost.

Why We Share This With Our Clients

At The Sherpa Group, we believe smart ownership doesn’t stop at the closing table. Understanding how taxes, assessments, and exemptions work is part of protecting your long-term investment.

The ATI exemption is a great example of how good information can directly impact your bottom line without changing your property, your plans, or your lifestyle.

The ATI Property Tax Exemption is one of South Carolina’s most practical (and underused) tax tools for buyers of 6% assessed properties.

If you purchased in 2025, January 30, 2026 is your deadline to act.

And if you’re planning to buy in the future, knowing about ATI ahead of time can help you plan more strategically before taxes ever become a surprise.

If you have questions about how this applies to your property, we’re always happy to help point you in the right direction.