What Is Supplemental Spousal Liability Insurance in New York?

Last Updated on October 2, 2026 by James Shaffer

Supplemental Spousal Liability (SSL) insurance is a New York auto coverage that can provide bodily injury liability protection when one spouse is injured or killed in a motor vehicle accident caused by the negligence of the other spouse.

This coverage matters because a standard New York auto liability policy does not necessarily provide liability coverage for injuries one insured spouse causes to the other. SSL fills that gap, up to the bodily injury liability limits already shown on the policy.

Under New York’s current rules, most personal auto policies automatically include SSL when the first named insured indicated on the application that they have a spouse, unless the first named insured declines the coverage in writing. The rules changed on March 26, 2025, and another statutory change is currently scheduled for July 31, 2027.

What Is Supplemental Spousal Liability Insurance?

Supplemental Spousal Liability insurance is a special type of bodily injury liability protection required to be made available under New York Insurance Law § 3420(g).

It addresses an unusual situation: you are legally responsible for a motor vehicle accident, but the person injured is your spouse.

For example, assume you are driving with your spouse in the passenger seat. You negligently cause an accident and your spouse suffers serious injuries. Your spouse may receive applicable no-fault benefits, but ordinary bodily injury liability coverage may not respond to a liability claim against you for your spouse’s injuries unless the policy includes Supplemental Spousal Liability coverage.

With SSL in place, the policy can provide liability coverage up to your existing bodily injury liability limits when a covered claim arises from the negligence of one spouse that injures or kills the other.

Why Does New York Have Supplemental Spousal Liability Coverage?

New York Insurance Law contains a special rule for liability arising from injury or death to an insured’s spouse. When the injured spouse must prove the other spouse’s culpable conduct to recover, the policy is not automatically treated as covering that liability unless the required spousal coverage is included.

SSL is designed to expressly add that protection to the auto policy.

The New York State Department of Financial Services explains SSL as coverage for an insured’s liability because of the death of or injury to the insured’s spouse, up to the liability limits provided by the policy.

Is Supplemental Spousal Liability Insurance Required in New York?

SSL is optional coverage, but New York’s current rules can cause it to be automatically added to certain policies unless it is declined.

For policies issued on or after March 26, 2025, a typical non-commercial motor vehicle policy subject to New York Insurance Law § 3425 must include SSL when the first named insured indicated on the insurance application that the insured has a spouse, unless the first named insured declines the coverage in writing.

If the first named insured did not indicate having a spouse on the application, the insurer generally must notify the policyholder that SSL is available rather than automatically adding it on that basis.

The insurer must also provide required notices explaining the coverage and showing the premium. You can review the state’s current requirements in DFS Insurance Circular Letter No. 2 (2025).

What Does Supplemental Spousal Liability Cover?

SSL applies when an insured becomes legally liable for bodily injury or death suffered by the insured’s spouse in a motor vehicle accident and the injured spouse’s recovery requires proof of the insured spouse’s culpable conduct.

The important point is that SSL does not operate like a separate accident-benefit policy. Instead, it allows the bodily injury liability portion of the auto policy to respond to a qualifying claim by the insured’s spouse.

• It provides bodily injury liability protection for a qualifying claim involving an insured’s spouse.
• It applies up to the bodily injury liability limits already carried on the policy.
• It does not increase those liability limits.
• According to DFS, the SSL protection applies to motor vehicles covered under the policy.
• Whether a particular claim is payable still depends on the facts, applicable law, policy language, damages and other coverage requirements.

Example of How SSL Insurance Works

Imagine a married couple is traveling in their insured vehicle. One spouse is driving, misses a red light and causes a collision. The passenger spouse suffers significant injuries.

The injured spouse may first qualify for New York no-fault benefits for covered medical expenses and other basic economic losses. If the injured spouse also has a legally valid liability claim against the spouse who caused the crash, SSL can make the driver’s bodily injury liability coverage available for that covered spousal claim.

If the policy carries $100,000 per person in bodily injury liability coverage, for example, purchasing SSL does not turn that into $200,000. The applicable liability limit remains $100,000 per person; SSL changes whether that liability protection can apply to a qualifying claim by the insured’s spouse.

Supplemental Spousal Liability vs. No-Fault PIP

SSL and Personal Injury Protection (PIP), or no-fault insurance, are two different parts of a New York auto policy.

Coverage	Supplemental Spousal Liability	New York No-Fault / PIP
Primary purpose	Liability protection when an insured spouse is legally responsible for injury or death to the other spouse	Pays eligible medical expenses and certain economic losses after a covered accident
Fault	Relevant to a claim based on the insured spouse’s negligence or other culpable conduct	Generally provides qualifying benefits regardless of who caused the accident
Limit	Uses the policy’s existing applicable bodily injury liability limit	Basic no-fault generally provides up to $50,000 per person in basic economic loss
If SSL is declined	The policy generally will not provide bodily injury liability coverage for the type of spousal claim SSL is designed to cover	An eligible spouse can still qualify for applicable no-fault benefits

That last distinction is especially important. The New York State Department of Financial Services specifically states that even if a policyholder declines SSL, a spouse can still be eligible for no-fault benefits.

No-fault, however, is not the same thing as liability insurance. It is primarily designed to pay qualifying economic losses after an accident. SSL addresses liability between spouses. For more detail about accident-related medical expenses, see our guide to how car insurance pays medical bills in New York.

Does SSL Increase Your Liability Limits?

No. Supplemental Spousal Liability coverage does not add a separate set of bodily injury limits.

If your policy has bodily injury liability limits of $100,000 per person and $300,000 per accident, SSL does not add another $100,000/$300,000. It allows the existing applicable liability limits to respond to a qualifying claim involving your spouse.

This is one reason your overall liability limits still matter. If you are deciding whether your current limits are sufficient, see our guide on how much auto insurance coverage to carry in New York.

How Much Does Supplemental Spousal Liability Cost?

There is no single statewide price for SSL. The premium depends on the insurer’s filed and approved rates and the liability limits on the policy.

DFS states that insurers must show a premium for SSL and may not simply represent the coverage as costing $0. The premium should be tied to the policy’s bodily injury limits when the policy uses split limits, or to the total liability limit when the policy uses a combined single limit.

If you decline SSL, the insurer must provide the appropriate premium reduction under its approved rates and rules, even if that reduction is relatively small.

Because premiums vary by insurer and policy limits, the most useful number is the SSL charge shown on your own premium notice or declarations documents.

How to Decline Supplemental Spousal Liability Coverage

The first named insured can decline SSL in writing using the form prescribed by the New York State Department of Financial Services. Insurers may make certain permitted administrative modifications to the form, such as adding the insurer’s name and contact information.

DFS also permits an insurer to obtain an electronic written declination when applicable electronic-document requirements are followed.

You can see the state’s current Supplemental Spousal Liability Insurance Declination Form on the DFS website.

Under the current rule, a written declination generally carries forward to subsequent renewals. The insurer does not have to obtain a new declination every time the policy renews unless the declination is later rescinded and the coverage is added again.

What If Your Marital Status Changes?

Do not assume your insurer will automatically add or remove SSL simply because your marital status changes after the policy was issued.

DFS guidance says New York’s current SSL law does not require insurers to automatically add or remove the coverage when a named insured’s marital status changes after policy issuance. The named insured should contact the insurer and request the appropriate coverage change in writing.

This can matter if you get married during the policy term, if information on the original application was incorrect, or if you previously declined SSL and later decide you want the protection.

Does SSL Cover Domestic Partners?

Supplemental Spousal Liability coverage specifically applies to a spouse. DFS states that SSL does not apply to a person with whom the insured has a domestic partnership or civil union.

However, DFS also explains that a domestic partner or person in a civil union is covered under the liability section of the motor vehicle policy rather than through SSL. Actual coverage still depends on the policy and facts of the claim, so confirm how your insurer lists household members and drivers.

Does SSL Apply to Every Type of Auto Policy?

No. The automatic-inclusion and notification requirements have important exceptions.

For example, DFS states that the SSL requirements in Insurance Law § 3420(g)(2) do not apply to umbrella liability insurance policies or for-hire motor vehicle liability policies. Other qualifying policies that do not fall under the personal-auto automatic-inclusion rule may provide SSL upon the insured’s written request and payment of the applicable premium.

For a broader explanation of which coverages New York drivers typically encounter, see our guide to types of car insurance coverage in New York.

New York’s SSL Rules Are Scheduled to Change in 2027

This is one area where the effective date matters.

As of October 2026, the current version of New York Insurance Law § 3420(g) is scheduled to remain in effect until July 31, 2027. Beginning July 31, 2027, the statute is currently scheduled to return to an opt-in structure under which an insured requests SSL in writing and pays the applicable premium, rather than the current automatic-inclusion system for certain married personal-auto policyholders.

The Legislature could change the law again before that date, so drivers reviewing this coverage in or after 2027 should verify the current version of New York Insurance Law § 3420 and current DFS guidance.

Should You Decline Supplemental Spousal Liability?

Whether SSL is worth keeping depends on your household and policy. There is no single answer that fits every married driver.

Before declining the coverage, consider:

• How much your insurer is charging for SSL.
• Your existing bodily injury liability limits.
• How frequently you and your spouse ride together.
• The financial consequences if one spouse seriously injures the other in an at-fault accident.
• The fact that no-fault and SSL cover different types of losses.
• Whether your insurer has the correct marital-status information on the policy.

It is also worth reviewing your entire policy rather than considering SSL in isolation. New York requires several core auto coverages, while others are optional. Our New York auto insurance laws and requirements guide explains how the major pieces fit together.

How to Check Whether You Have SSL Coverage

If you are unsure whether Supplemental Spousal Liability is included on your policy, start with your declarations page and latest premium notice.

1. Check the declarations page. Look for “Supplemental Spousal Liability,” “Spousal Liability,” or a similar endorsement or coverage description.
2. Review your premium notice. New York requires applicable SSL notices to explain the coverage and disclose its premium.
3. Check whether you previously declined it. A prior written declination can remain effective at later renewals.
4. Confirm your marital status with the insurer. Do not assume a marriage or other status change automatically updated the policy.
5. Ask your insurer or licensed producer. Have them confirm whether SSL is currently included and what premium applies.

FAQs on Supplemental Spousal Liability Insurance in New York