Every time you rent a car, the person behind the counter walks through the same script — collision damage waiver, supplemental liability, personal accident insurance, personal effects coverage — and the total adds up to $40 or $50 a day on top of the rental rate. And every time, you have to make a split-second decision about what to take and what to decline without really knowing what your existing coverage already handles.
Here is a clear breakdown of what each rental counter product actually does, what your personal auto policy likely already covers, and how to make an informed decision rather than a guess.
What the Rental Counter Is Selling You
Collision Damage Waiver (CDW) / Loss Damage Waiver (LDW)
This is the big one — typically $15 to $30 per day. It is not technically insurance. It is the rental company agreeing to waive their right to collect from you if the vehicle is damaged or stolen during your rental period. Without it, you are on the hook for any damage to the rental vehicle, including loss of use charges, administrative fees, and diminished value.
Supplemental Liability Insurance (SLI)
This covers bodily injury and property damage you cause to others in an accident while driving the rental car — up to the policy limit, which is usually $1 million. In South Carolina, the state minimum is $25,000 per person / $50,000 per accident for bodily injury — a number that can be exhausted quickly in a serious accident.
Personal Accident Insurance (PAI)
Covers medical expenses for you and your passengers if you are injured in an accident in the rental car. This is almost always redundant with your health insurance and your personal injury protection or medical payments coverage on your auto policy. For most people, this is the easiest item to decline.
Personal Effects Coverage
Covers theft of personal belongings from the rental vehicle. Your homeowners or renters insurance personal property coverage typically extends to belongings away from home, subject to your deductible and any applicable sublimits.
What Your Personal Auto Policy Likely Covers
The key principle: your personal auto insurance policy generally extends to rental vehicles when you are renting for personal use.
Collision and Comprehensive Coverage
If you carry collision and comprehensive coverage on your personal vehicle, that coverage typically extends to a rental car you are using for personal purposes. Your collision deductible applies, and your carrier pays for the physical damage to the rental vehicle. One important nuance: your personal auto policy may not cover loss of use charges, administrative fees, or diminished value claims from the rental company — areas where the CDW provides specific protection.
Liability Coverage
Your personal auto liability coverage extends to rental vehicles. If you cause an accident in a rental car, your liability limits respond the same way they would if you were driving your own vehicle. If your personal liability limits are adequate — we generally recommend at least $100,000 per person / $300,000 per accident, and ideally an umbrella policy on top of that — you may not need the rental company’s SLI.
Uninsured Motorist Coverage
Your UM/UIM coverage also follows you into a rental vehicle. If an uninsured driver hits you while you are driving a rental car, your UM coverage responds.
What Credit Cards Cover
Many credit cards — particularly travel rewards cards — offer collision damage waiver coverage as a cardholder benefit when you pay for the rental with that card. This coverage is typically secondary to your personal auto policy. Some premium cards offer primary coverage, meaning they pay first without involving your personal auto policy.
Credit card rental coverage has important limitations: coverage period limits (typically 15–31 days), vehicle type exclusions (trucks, exotic vehicles, large SUVs), geographic restrictions, business use exclusions, and gaps on loss of use and administrative fees.
Before declining the rental counter’s CDW, call your auto insurance agent and your credit card’s benefits line to confirm specifically what is covered, what is excluded, and how claims work. A five-minute call before your rental can prevent a $3,000 surprise after it.
When You Should Consider Taking the CDW
Despite your personal auto coverage, there are situations where the CDW is worth taking: you carry only liability coverage (no collision or comprehensive); you are renting for business purposes; you want to avoid a claim on your personal policy; the rental is for an extended period; or you are renting a vehicle significantly more expensive than your own.
The Bottom Line
For most South Carolina drivers with full coverage personal auto insurance and a solid credit card benefit, the rental counter’s CDW is the primary item that warrants scrutiny — and even then, your existing coverage may handle it adequately. The PAI is almost always redundant. The SLI is worth considering only if your personal liability limits are low.
The best approach: know what you have before you get to the counter. Call us before your next trip and we will tell you in under five minutes exactly what your personal auto policy covers on a rental and where any gaps exist.
Perry Insurance Group | 843-663-4440 | PerryInsuranceGroup.com | North Myrtle Beach | Surfside Beach | Little River | The Entire Grand Strand
