Cost mechanics

How Deductible Affects Car Insurance Premium

By YesWeSure EditorialReviewed October 9, 2026Editorial standardsSources

Short answer

A deductible only lowers premium on coverages that have one. Collision and comprehensive carry deductibles, so raising them reduces those portions of premium. Liability (bodily injury, property damage to others) has no deductible: the carrier pays first dollar to the third party up to policy limits, so deductible choice is irrelevant there. State-specific rules change the picture: Florida mandates a $0 deductible on windshield glass, Kentucky and South Carolina do similarly, and Florida PIP permits deductible options from $0 to $1,000.¹³⁴

Quick answer

Collision deductible: higher deductible = lower premium on the collision line.
Comprehensive deductible: higher deductible = lower premium on the comprehensive line.
Liability: no deductible exists. Changing deductibles has no effect on liability premium.
PIP (where available): in some no-fault states (Florida most notably), you can choose a PIP deductible; higher deductible lowers PIP premium.⁵
Glass mandates: Florida, Kentucky, and South Carolina require $0 deductible on windshield glass. Your chosen comp deductible does not apply to glass losses in those states.⁴⁶⁷

Which coverages have deductibles (and which do not)

Auto insurance is a stack of coverages, each priced separately. Deductibles sit on the physical-damage portion of that stack, not on the liability portion. Reading your declarations page from top to bottom:

Coverage	Deductible?	How it works	Premium effect
Collision	Yes	Deductible is subtracted from the covered repair or ACV payout on a crash-related loss to your vehicle. Common choices: $250, $500, $1,000, sometimes $2,500.	Higher deductible lowers the collision portion of premium. Carrier files the rate at each deductible step; the dollar savings vary by state, vehicle, and profile.
Comprehensive	Yes	Deductible is subtracted from the covered loss for non-collision damage (theft, vandalism, hail, fire, animal strike, falling objects). Common choices: $100, $250, $500, $1,000.	Higher deductible lowers the comprehensive portion of premium. The absolute savings tend to be smaller than on collision because comp premium is a smaller line item.
Liability (bodily injury, property damage)	No	The carrier pays first dollar for third-party injury or damage you cause, up to the policy limits. There is no deductible on liability coverage in a standard personal auto policy.	Deductible changes do not apply. Premium on this coverage moves with limits, state, driving record, and territory, not with any deductible.
Uninsured and underinsured motorist bodily injury (UM/UIM BI)	Usually no (varies by state)	In most states, UM/UIM BI pays first dollar for your injuries caused by an uninsured or underinsured driver. A few states permit a modest deductible on UIM property damage.	In the typical case, deductible changes do not apply. Where a UMPD deductible exists, it functions like comprehensive.
Personal Injury Protection (PIP)	Varies by state	In no-fault states, PIP covers your own medical expenses regardless of fault. Florida permits deductible options from $0 to $1,000. Michigan has a separate PIP coverage-level selection framework. Each state is different.	Where a PIP deductible is available, choosing a higher one reduces the PIP premium on the policy.
Rental reimbursement	Typically no	Carrier pays up to a daily limit while your vehicle is in the shop after a covered loss. No deductible applies to the rental reimbursement payout itself.	Rental premium is set by the daily and total limits chosen (for example, $30 per day up to $900), not by a deductible.
Glass (windshield) under comprehensive	Zero in FL, KY, SC; your comp deductible elsewhere	Florida Statutes Section 627.7288 requires $0 deductible on windshield glass claims under comprehensive. Kentucky and South Carolina have comparable zero-deductible glass treatment. In other states, your chosen comp deductible applies to glass losses.	In mandate states, the glass carve-out does not change your comp deductible selection; it only waives the deductible for glass-specific losses.

The mechanism in plain terms

When you raise a deductible, you are telling the carrier you will absorb more of each loss yourself. The carrier prices this at the loss cost it expects to transfer back to you, averaged across drivers with similar profiles. The savings on your bill are the carrier’s expected reduction in payouts, with margin.¹²

Move	Direction	Mechanism
Raise deductible (for example, $500 to $1,000)	Premium falls	Carrier's expected loss cost per claim drops by the extra $500, so the fraction of premium covering the physical-damage line falls. Savings scale roughly with how often similar drivers claim.
Lower deductible (for example, $1,000 to $250)	Premium rises	Carrier covers more of each loss, so expected loss cost rises. The absolute dollar effect depends on claim frequency on your profile and vehicle.
Set collision at $1,000 but comprehensive at $250	Mixed	The two deductibles are usually chosen independently. This profile raises your exposure on crash losses while keeping low exposure on glass, hail, and theft losses.
Drop collision and comprehensive entirely	Largest premium drop	This eliminates the physical-damage portion of premium, often 50 to 70 percent of total premium on a newer vehicle. You then have no coverage for your own vehicle damage; typically only an option if you own the car outright and could absorb its total loss.

Worked example (hypothetical)

The numbers below are illustrative. Carriers file their own rates by state, vehicle, and profile; your actual quote may differ. The structure of the arithmetic, however, is the same for every policy.

Base full-coverage policy (hypothetical): liability $600, collision $600, comprehensive $200, total $1,400 per year, both deductibles at $500.
Raise collision to $1,000: collision drops to, say, $490 (illustrative). Total policy drops to about $1,290 per year. Liability and comprehensive lines do not move.
Raise comprehensive to $1,000: comprehensive drops to, say, $165. Combined with the collision step, total policy drops to about $1,255 per year.
Lower collision to $250: collision rises back up to, say, $680. Total $1,445.

The liability $600 does not move in any of these scenarios. That is because liability has no deductible and no deductible lever to pull.³

For the structured comparison between the two most common deductible choices, see our dedicated $500 vs $1,000 deductible break-even page.

State and carrier exceptions

Three state-specific rules are worth memorizing because they override the standard deductible mechanics.

Florida glass ($0 deductible on windshield glass under comprehensive). Florida Statutes Section 627.7288 requires carriers to waive the comprehensive deductible on windshield glass repair or replacement. If you carry comp, glass is $0 at claim time regardless of your comp deductible selection.⁴
Kentucky and South Carolina glass. Both states have comparable zero-deductible treatment of windshield glass claims under comprehensive. The statutory mechanism varies, but the practical outcome is the same for consumers.⁶⁷
Florida PIP deductible options ($0 to $1,000). Florida PIP is a separate coverage with its own deductible menu. Choosing a higher PIP deductible lowers the PIP line of premium, but it applies to medical bills from a crash, not to your vehicle damage.⁵

Other state and carrier specifics:

Michigan PIP (post-2019 reform). Michigan’s PIP system now allows coverage-level selection (unlimited, $500,000, $250,000, $50,000, or opt-out), which affects premium far more than any deductible. The term deductible is less relevant on Michigan PIP than coverage-level selection is.
UMPD deductibles. In the states that offer Uninsured Motorist Property Damage, a modest deductible (often $250) sometimes applies. Where UMPD exists, it can substitute for collision in a not-at-fault hit-and-run scenario.
Lender maximum deductibles. Lenders and lessors often cap the collision deductible, most commonly at $500 or $1,000. This is contractual and independent of any state rule.
Carrier deductible menu. Not every carrier offers every number. Some file $250, $500, $1,000 only; others include $100, $750, $1,500, $2,500. The incremental savings diminish as you climb.

Edge cases and non-obvious effects

Totaled vehicle. If the carrier totals the vehicle, the deductible is subtracted from the ACV settlement. A $1,000 deductible on an older vehicle with $4,000 ACV is a quarter of the check.
Not-at-fault losses. If another driver is at fault, your carrier may still pay you under collision and then pursue subrogation. Your deductible is usually refunded on successful subrogation.
Diminished value. Separate from the repair payout, you may recover diminished value from the at-fault driver’s insurer. This is a third-party liability recovery, not a deductible item.
Multiple deductibles in one event. A deer strike that damages both the body (comp) and the undercarriage (sometimes classed collision) typically triggers one deductible, but confirmation depends on the adjuster’s coding of the loss.
Vanishing deductible programs. Carrier programs that credit $100 off the deductible per claim-free year change the realized deductible over time. See vanishing deductible.
Full-coverage status. Deductible choice does not change whether you have full coverage. Full coverage is the presence of collision and comprehensive; the deductible level inside those is a separate selection.

No. A liability-only policy by definition does not carry collision or comprehensive, so there is no deductible to adjust. If your policy is liability-only, the deductible lever does not exist on it. To reduce liability-only premium, your options are limits, discounts, carrier shopping, and credit (where credit is permitted). See our liability-only cost page.

In the usual sequence of events, you file with your own collision carrier, pay the deductible, and the carrier pursues the at-fault driver via subrogation to recover what it paid you plus (often) your deductible. Whether you ultimately pay the deductible depends on whether subrogation succeeds. For the structured answer, see our dedicated do I pay the deductible if not at fault page.

Not for every household. The savings on the top step of the deductible ladder (for example $2,500) tend to be incrementally smaller than the step before, while the out-of-pocket exposure grows one for one. Match the deductible to your cash reserves, your claim frequency, and the lender’s rules.

Yes. These are two separate selections on the declarations page. A common pattern is a higher comprehensive deductible (lower-frequency losses) and a lower collision deductible, or the reverse depending on parking, hail, and animal-strike exposure.

You pay the full repair cost yourself; the carrier pays nothing because the loss is below your deductible. In many cases, filing is not advisable because the administrative overhead and the claim-history record can outweigh a zero payout. See the full math and three worked examples at repair cost less than deductible.

The cleanest way to see your actual premium effect is to pull a quote at two deductible levels on the same carrier, same coverage, same vehicle.

Compare car insurance quotes

YesWeSure may receive compensation when readers use quote-comparison links. See our advertiser disclosure and editorial standards.

Sources

NAIC: A Consumer's Guide to Auto Insurance. Explains collision and comprehensive deductibles, the premium-vs-exposure trade-off, and the no-deductible structure of liability coverage. (National Association of Insurance Commissioners)
Insurance Information Institute: Understanding your deductible. Describes which coverages carry deductibles and the common $250, $500, $1,000 ladder. (Insurance Information Institute)
Insurance Information Institute: What is covered by a basic auto policy. Covers the structural distinction between liability (no deductible, pays third parties) and physical-damage coverages (deductible applies). (Insurance Information Institute)
Florida Statutes Section 627.7288: Comprehensive coverage; deductible not to apply to motor vehicle glass. State law requiring $0 glass deductible on comprehensive coverage in Florida. (Florida Legislature)
Florida Office of Insurance Regulation: Personal Injury Protection (PIP) consumer resource. Discusses PIP deductible options ($0 to $1,000) available on Florida auto policies. (Florida Office of Insurance Regulation)
Kentucky Revised Statutes: Full glass coverage without deductible on motor vehicle comprehensive coverage. (Kentucky Department of Insurance)
South Carolina Department of Insurance: Auto glass claims and the state's zero-deductible treatment of windshield glass under comprehensive. (South Carolina Department of Insurance)
California Department of Insurance: Automobile insurance information guide. State DOI explainer on physical-damage deductibles and premium selection. (California Department of Insurance)

Methodology: this page explains the deductible-premium mechanism qualitatively using NAIC, III, and state DOI guidance, and cites specific statutes for glass mandates and PIP deductible options. Premium figures in the worked example are illustrative only and are not drawn from published national averages. Last reviewed October 9, 2026.

How Deductible Affects Car Insurance Premium

By YesWeSure EditorialReviewed October 9, 2026Editorial standardsSources

Short answer

Quick answer

Collision deductible: higher deductible = lower premium on the collision line.
Comprehensive deductible: higher deductible = lower premium on the comprehensive line.
Liability: no deductible exists. Changing deductibles has no effect on liability premium.
PIP (where available): in some no-fault states (Florida most notably), you can choose a PIP deductible; higher deductible lowers PIP premium.⁵
Glass mandates: Florida, Kentucky, and South Carolina require $0 deductible on windshield glass. Your chosen comp deductible does not apply to glass losses in those states.⁴⁶⁷

Which coverages have deductibles (and which do not)

Coverage	Deductible?	How it works	Premium effect
Collision	Yes	Deductible is subtracted from the covered repair or ACV payout on a crash-related loss to your vehicle. Common choices: $250, $500, $1,000, sometimes $2,500.	Higher deductible lowers the collision portion of premium. Carrier files the rate at each deductible step; the dollar savings vary by state, vehicle, and profile.
Comprehensive	Yes	Deductible is subtracted from the covered loss for non-collision damage (theft, vandalism, hail, fire, animal strike, falling objects). Common choices: $100, $250, $500, $1,000.	Higher deductible lowers the comprehensive portion of premium. The absolute savings tend to be smaller than on collision because comp premium is a smaller line item.
Liability (bodily injury, property damage)	No	The carrier pays first dollar for third-party injury or damage you cause, up to the policy limits. There is no deductible on liability coverage in a standard personal auto policy.	Deductible changes do not apply. Premium on this coverage moves with limits, state, driving record, and territory, not with any deductible.
Uninsured and underinsured motorist bodily injury (UM/UIM BI)	Usually no (varies by state)	In most states, UM/UIM BI pays first dollar for your injuries caused by an uninsured or underinsured driver. A few states permit a modest deductible on UIM property damage.	In the typical case, deductible changes do not apply. Where a UMPD deductible exists, it functions like comprehensive.
Personal Injury Protection (PIP)	Varies by state	In no-fault states, PIP covers your own medical expenses regardless of fault. Florida permits deductible options from $0 to $1,000. Michigan has a separate PIP coverage-level selection framework. Each state is different.	Where a PIP deductible is available, choosing a higher one reduces the PIP premium on the policy.
Rental reimbursement	Typically no	Carrier pays up to a daily limit while your vehicle is in the shop after a covered loss. No deductible applies to the rental reimbursement payout itself.	Rental premium is set by the daily and total limits chosen (for example, $30 per day up to $900), not by a deductible.
Glass (windshield) under comprehensive	Zero in FL, KY, SC; your comp deductible elsewhere	Florida Statutes Section 627.7288 requires $0 deductible on windshield glass claims under comprehensive. Kentucky and South Carolina have comparable zero-deductible glass treatment. In other states, your chosen comp deductible applies to glass losses.	In mandate states, the glass carve-out does not change your comp deductible selection; it only waives the deductible for glass-specific losses.

The mechanism in plain terms

Move	Direction	Mechanism
Raise deductible (for example, $500 to $1,000)	Premium falls	Carrier's expected loss cost per claim drops by the extra $500, so the fraction of premium covering the physical-damage line falls. Savings scale roughly with how often similar drivers claim.
Lower deductible (for example, $1,000 to $250)	Premium rises	Carrier covers more of each loss, so expected loss cost rises. The absolute dollar effect depends on claim frequency on your profile and vehicle.
Set collision at $1,000 but comprehensive at $250	Mixed	The two deductibles are usually chosen independently. This profile raises your exposure on crash losses while keeping low exposure on glass, hail, and theft losses.
Drop collision and comprehensive entirely	Largest premium drop	This eliminates the physical-damage portion of premium, often 50 to 70 percent of total premium on a newer vehicle. You then have no coverage for your own vehicle damage; typically only an option if you own the car outright and could absorb its total loss.

Worked example (hypothetical)

The numbers below are illustrative. Carriers file their own rates by state, vehicle, and profile; your actual quote may differ. The structure of the arithmetic, however, is the same for every policy.

Base full-coverage policy (hypothetical): liability $600, collision $600, comprehensive $200, total $1,400 per year, both deductibles at $500.
Raise collision to $1,000: collision drops to, say, $490 (illustrative). Total policy drops to about $1,290 per year. Liability and comprehensive lines do not move.
Raise comprehensive to $1,000: comprehensive drops to, say, $165. Combined with the collision step, total policy drops to about $1,255 per year.
Lower collision to $250: collision rises back up to, say, $680. Total $1,445.

The liability $600 does not move in any of these scenarios. That is because liability has no deductible and no deductible lever to pull.³

For the structured comparison between the two most common deductible choices, see our dedicated $500 vs $1,000 deductible break-even page.

State and carrier exceptions

Three state-specific rules are worth memorizing because they override the standard deductible mechanics.

Florida glass ($0 deductible on windshield glass under comprehensive). Florida Statutes Section 627.7288 requires carriers to waive the comprehensive deductible on windshield glass repair or replacement. If you carry comp, glass is $0 at claim time regardless of your comp deductible selection.⁴
Kentucky and South Carolina glass. Both states have comparable zero-deductible treatment of windshield glass claims under comprehensive. The statutory mechanism varies, but the practical outcome is the same for consumers.⁶⁷
Florida PIP deductible options ($0 to $1,000). Florida PIP is a separate coverage with its own deductible menu. Choosing a higher PIP deductible lowers the PIP line of premium, but it applies to medical bills from a crash, not to your vehicle damage.⁵

Other state and carrier specifics:

Michigan PIP (post-2019 reform). Michigan’s PIP system now allows coverage-level selection (unlimited, $500,000, $250,000, $50,000, or opt-out), which affects premium far more than any deductible. The term deductible is less relevant on Michigan PIP than coverage-level selection is.
UMPD deductibles. In the states that offer Uninsured Motorist Property Damage, a modest deductible (often $250) sometimes applies. Where UMPD exists, it can substitute for collision in a not-at-fault hit-and-run scenario.
Lender maximum deductibles. Lenders and lessors often cap the collision deductible, most commonly at $500 or $1,000. This is contractual and independent of any state rule.
Carrier deductible menu. Not every carrier offers every number. Some file $250, $500, $1,000 only; others include $100, $750, $1,500, $2,500. The incremental savings diminish as you climb.

Edge cases and non-obvious effects

Totaled vehicle. If the carrier totals the vehicle, the deductible is subtracted from the ACV settlement. A $1,000 deductible on an older vehicle with $4,000 ACV is a quarter of the check.
Not-at-fault losses. If another driver is at fault, your carrier may still pay you under collision and then pursue subrogation. Your deductible is usually refunded on successful subrogation.
Diminished value. Separate from the repair payout, you may recover diminished value from the at-fault driver’s insurer. This is a third-party liability recovery, not a deductible item.
Multiple deductibles in one event. A deer strike that damages both the body (comp) and the undercarriage (sometimes classed collision) typically triggers one deductible, but confirmation depends on the adjuster’s coding of the loss.
Vanishing deductible programs. Carrier programs that credit $100 off the deductible per claim-free year change the realized deductible over time. See vanishing deductible.
Full-coverage status. Deductible choice does not change whether you have full coverage. Full coverage is the presence of collision and comprehensive; the deductible level inside those is a separate selection.

The cleanest way to see your actual premium effect is to pull a quote at two deductible levels on the same carrier, same coverage, same vehicle.

Compare car insurance quotes

YesWeSure may receive compensation when readers use quote-comparison links. See our advertiser disclosure and editorial standards.

Sources

NAIC: A Consumer's Guide to Auto Insurance. Explains collision and comprehensive deductibles, the premium-vs-exposure trade-off, and the no-deductible structure of liability coverage. (National Association of Insurance Commissioners)
Insurance Information Institute: Understanding your deductible. Describes which coverages carry deductibles and the common $250, $500, $1,000 ladder. (Insurance Information Institute)
Insurance Information Institute: What is covered by a basic auto policy. Covers the structural distinction between liability (no deductible, pays third parties) and physical-damage coverages (deductible applies). (Insurance Information Institute)
Florida Statutes Section 627.7288: Comprehensive coverage; deductible not to apply to motor vehicle glass. State law requiring $0 glass deductible on comprehensive coverage in Florida. (Florida Legislature)
Florida Office of Insurance Regulation: Personal Injury Protection (PIP) consumer resource. Discusses PIP deductible options ($0 to $1,000) available on Florida auto policies. (Florida Office of Insurance Regulation)
Kentucky Revised Statutes: Full glass coverage without deductible on motor vehicle comprehensive coverage. (Kentucky Department of Insurance)
South Carolina Department of Insurance: Auto glass claims and the state's zero-deductible treatment of windshield glass under comprehensive. (South Carolina Department of Insurance)
California Department of Insurance: Automobile insurance information guide. State DOI explainer on physical-damage deductibles and premium selection. (California Department of Insurance)

How Deductible Affects Car Insurance Premium

Which coverages have deductibles (and which do not)

The mechanism in plain terms

Worked example (hypothetical)

State and carrier exceptions

Edge cases and non-obvious effects

Sources

Related reading

How Deductible Affects Car Insurance Premium

Which coverages have deductibles (and which do not)

The mechanism in plain terms

Worked example (hypothetical)

State and carrier exceptions

Edge cases and non-obvious effects

Sources

Related reading

Which coverages have deductibles (and which do not)

The mechanism in plain terms

Worked example (hypothetical)

State and carrier exceptions

Edge cases and non-obvious effects

Does a higher deductible save money on liability-only policies?

Does my deductible apply when someone else hits me?

Is choosing the highest deductible always best?

Can I pick different deductibles for collision and comp?

What if the repair is less than my deductible?

Sources

Related reading

Which coverages have deductibles (and which do not)

The mechanism in plain terms

Worked example (hypothetical)

State and carrier exceptions

Edge cases and non-obvious effects

Does a higher deductible save money on liability-only policies?

Does my deductible apply when someone else hits me?

Is choosing the highest deductible always best?

Can I pick different deductibles for collision and comp?

What if the repair is less than my deductible?

Sources

Related reading