Myrtle Beach Property Tax Mistake That Costs Buyers $2,400+ a Year

Quick Summary

• South Carolina taxes owner-occupied primary residences at a 4% assessment ratio. Everything else — second homes, investment properties, short- and long-term rentals — is taxed at 6%.
• Horry County automatically assesses every new purchase at the 6% rate until you personally apply for the primary residence rate. Nobody does it for you.
• On a $350,000 home, that's roughly $1,400–$1,800/year at the 4% rate versus $4,000–$4,500/year at the 6% rate — a difference of about $2,400–$2,700 every year.
• You need 4 specific documents to qualify, and there's a hard filing deadline of January 15th for that tax year.
• If your taxes are escrowed into your mortgage, missing this can raise your monthly payment by $250–$300 with no warning — and your mortgage company likely won't know why.
  

Why Your Myrtle Beach Property Tax Bill Isn't What You Expect

South Carolina assesses real estate at two different ratios: 4% and 6%. That percentage isn't the tax rate itself — it's the taxable base the county applies its millage rate against. The rate you get depends entirely on how the property is used.
The 4% rate is reserved for primary residences only — homes you actually live in full-time. The 6% rate applies to everything else: second homes, investment properties, and short- or long-term rentals.
Here's where buyers get caught off guard: Horry County doesn't know how you plan to use the property. So by default, every new purchase is assessed at the 6% rate — until you prove otherwise by applying for the primary residence exemption yourself.

The Real Dollar Difference: What a $350,000 Home Actually Costs

The 4% Primary Residence Rate

On a home purchased for $350,000, the 4% primary residence rate typically works out to somewhere between $1,400 and $1,800 per year, depending on your specific area and local millage rate.
One important note: don't base your expectations on what the seller was paying at closing. That number is prorated from the previous owner's assessment — not what you'll actually owe going forward.

The 6% Rate for Everyone Else

That same $350,000 home, assessed at 6%, generates a tax bill of roughly $4,000 to $4,500 per year — because you also lose the owner-occupied school tax exemption. That's often double or triple what a primary resident would pay on the identical property.

Quick Way to Estimate Your Own Bill

A simple back-of-napkin calculation: take your purchase price, multiply by 4% (or 6%, depending on how the property will be used), then multiply by your area's average millage rate. That gives you a reasonable estimate of your annual property tax bill.

Why Horry County Automatically Puts You at the Higher Rate

This catches more buyers off guard than almost anything else in the closing process. Agents often don't mention it, so buyers get into their new investment property or primary home and later ask, "Why is my tax bill $4,000 to $5,000? I saw online it was only $1,400."
The answer is simple: nobody told them their agent needed to flag this, and nobody applied for the primary residence rate on their behalf. If you escrow your taxes into your mortgage payment, this can also mean your monthly payment jumps $250 to $300 seemingly out of nowhere — and because the 4% vs. 6% system is specific to South Carolina, your mortgage company may have no idea what you're talking about when you call to ask why.

How to Qualify for the 4% Primary Residence Rate

First, an important qualifier: if the home isn't truly your primary residence, you can't claim this rate. Horry County does audit property tax filings — if you're marketing a property as a rental while claiming the primary residence rate, the county will find out and assess you for back taxes at the 6% rate.

The 4 Documents You Need

To apply for the primary residence rate, the Horry County Assessor's Office requires:
1. South Carolina driver's license or state ID showing your new property address (you'll need to visit the DMV to update this)
2. South Carolina vehicle registration for your vehicle, registered at your new address
3. Your most recent federal and South Carolina income tax returns, if applicable
4. Your closing settlement statement, showing the purchase date and confirming you're the legal owner

Make Sure Everything Matches

Your driver's license, vehicle registration, and tax address all need to match your property address exactly. You can't get a South Carolina license while keeping out-of-state vehicle registration — any mismatch or typo will get your application flagged and rejected.

How and When to File

Filing is straightforward once your documents are in order.

Filing Online

You can complete the Horry County Special Assessment Legal Residence Application online through the Horry County Taxpayer Services portal. Online Application

Filing In Person

You can also deliver or mail your application in person at the Tax Assessor's Office in Conway or on 10th Avenue in Myrtle Beach. If you're already at the Myrtle Beach DMV, the Tax Assessor's Office is directly across the street — worth handling both in the same trip.

The January 15th Deadline (And Why You Shouldn't Wait)

The legal deadline to file for your tax exemption for the current tax year is January 15th. But don't wait until then. As soon as you close and move in, get your license updated, register your vehicle, and apply right away. Filing promptly means your first tax bill comes in correct the first time, instead of at the higher secondary rate.

What Happens If You Miss This

This isn't just theoretical — it happens even to people in the industry. I tell all my buyers about this, and I still got busy and let it slip on one of my own properties. What should have been about $700 turned into $1,900, and I ended up on the phone with my mortgage company saying, "No, no — it's a 4% rate," and they had no idea what I was talking about.
If this happens to you, don't expect your mortgage company to sort it out. You'll need to go directly to the Tax Assessor's Office, get the form, gather your documents, and apply. Once it's processed, it will get corrected — but it's on you to make it happen.

A Bonus for Homeowners 65 and Older: The Homestead Exemption

If you're 65 or older, legally blind, or disabled, and you've lived in South Carolina for at least one year, you may also qualify for the Homestead Exemption. This exempts $50,000 of your tax-assessed value from your property tax calculation.
On that same $350,000 home, that means only $300,000 gets applied to the 4% rate and millage calculation — instead of the full $350,000.
One important distinction: legal residence applications are handled by the Assessor's Office, but the Homestead Exemption is filed separately through the Horry County Auditor's Office. Make sure you're applying at the right office for each one.

What This Means If You're Buying an Investment Property or Second Home

This isn't only relevant to primary-residence buyers. If you're purchasing an investment property or second home along the Grand Strand, it's just as important to understand you'll be taxed at the 6% rate from day one — and to budget for it accurately. Many agents don't walk investment buyers through this, and it's frustrating to find out only after closing that your tax bill is $4,800 instead of the $1,800 you were expecting.

FAQ

What's the difference between South Carolina's 4% and 6% property tax rates?
The 4% rate applies to owner-occupied primary residences. The 6% rate applies to second homes, investment properties, and short- or long-term rentals. The percentage is the assessment ratio used to calculate your taxable base, not the tax rate itself.

Does Horry County automatically apply the primary residence rate when I buy a home?
No. Every new purchase is automatically assessed at the 6% rate until you personally apply for the primary residence exemption with the Horry County Assessor's Office.

What documents do I need to qualify for the 4% rate in Horry County?
You'll need a South Carolina driver's license or ID with your new address, South Carolina vehicle registration, your most recent federal and state tax returns (if applicable), and your closing settlement statement.

What's the deadline to apply for the legal residence tax rate?
January 15th for that tax year, but you should apply as soon as you move in rather than waiting — that way your first tax bill is calculated correctly from the start.

Can I get additional property tax savings if I'm 65 or older?
Yes. If you're 65 or older, legally blind, or disabled, and you've lived in South Carolina for at least a year, you may qualify for the Homestead Exemption, which excludes $50,000 of your home's assessed value from your property tax calculation. This is filed separately through the Horry County Auditor's Office.

The Bottom Line

The 4% vs. 6% property tax system is one of the most overlooked parts of buying a home in Horry County — and it's an easy one to get right if you know what to do. Update your license, register your vehicle, gather your closing documents, and apply as soon as you close. That's it.
If you're planning a move to Myrtle Beach, Conway, Carolina Forest, or anywhere on the Grand Strand and this will be your primary residence, reach out — I'd love to go over the numbers with you before you close, not after. And if you're buying an investment property or second home, I can help you understand exactly what your real tax bill is going to look like too. I've got 16 years of experience helping buyers navigate exactly this — give me a call.