Accident Insurance Increase Calculator

Accident Insurance Increase Calculator: Estimate Your Car Insurance Cost After an Accident

A car accident can affect more than the cost of repairing your vehicle. It may also affect what you pay for auto insurance at your next renewal.

Our Accident Insurance Increase Calculator helps you estimate what could happen to your premium if your insurer applies an accident-related rate increase.

You enter your current insurance premium, choose the period that premium covers, enter an estimated percentage increase, and select how many years you want to project.

The calculator can then show:

• Your estimated new premium after the increase
• The extra amount per billing period
• Your new monthly-equivalent insurance cost
• Your new annual-equivalent insurance cost
• Your estimated additional cost per year
• Your projected additional cost over several years

The result is an estimate rather than an insurance quote. An accident does not create the same premium increase for every driver.

How to Use the Accident Insurance Increase Calculator

The calculator is designed to work with your own insurance figures rather than assigning a random premium to you.

1. Enter Your Current Car Insurance Premium

Start with the amount you currently pay.

For example:

$180 per month

or:

$1,080 for six months

or:

$2,160 per year

Use the amount shown on your actual policy or latest renewal documents.

2. Choose the Premium Period

Tell the calculator whether the amount you entered is:

• Monthly
• Six-month
• Annual

This matters because a $1,200 annual premium is very different from a $1,200 six-month premium.

3. Enter the Expected Insurance Increase Percentage

Enter the percentage increase you want to model.

For example, you might test:

• 20%
• 30%
• 49%
• 60%
• Any other percentage you want to calculate

The percentage is manually editable because no single accident surcharge applies to every driver.

A recent national rate analysis for a sample driver with one at-fault accident found an average full-coverage increase of roughly 49%, but individual insurer results in that analysis varied considerably.

Your own rate could increase by less, more, or not at all depending on your insurer, state, accident, policy, and eligibility for accident forgiveness.

4. Enter the Number of Years

You can also estimate the longer-term financial impact.

For example:

If your insurance increases by $900 per year and the accident affects your premium for three years:

$900 × 3 = $2,700

This does not mean the exact surcharge will necessarily stay unchanged for all three years.

It simply shows what the extra cost would be if the entered increase remained constant during the selected period.

How Is the Accident Insurance Increase Calculated?

The basic formula is straightforward.

New Premium = Current Premium × (1 + Increase Percentage ÷ 100)

For example:

Current monthly premium:

$200

Estimated increase:

40%

Calculation:

$200 × 1.40 = $280

Estimated new monthly premium:

$280

Additional monthly cost:

$80

Additional annual cost:

$80 × 12 = $960

Accident Insurance Increase Example

Suppose you currently pay:

$1,200 every six months

Your monthly-equivalent cost is:

$1,200 ÷ 6 = $200

Your annual-equivalent cost is:

$2,400

Now assume you want to estimate a 49% accident-related increase.

New six-month premium:

$1,200 × 1.49 = $1,788

Additional cost every six months:

$588

New monthly equivalent:

$298

Additional monthly equivalent:

$98

New annual equivalent:

$3,576

Additional annual cost:

$1,176

If the same additional cost continued for three years:

$1,176 × 3 = $3,528

This example shows why even a moderate percentage increase can become significant over several renewal periods.

How Much Does Car Insurance Increase After an Accident?

There is no universal percentage.

Recent national rate research has found that an at-fault accident can raise full-coverage premiums significantly on average. One recent analysis estimated an average increase of about 49% for its sample driver.

But that should not be treated as a guaranteed surcharge.

Different companies may react very differently to the same accident.

Your increase can depend on:

• Whether you were at fault
• The cost of the claim
• Whether anyone was injured
• Your previous driving record
• Your previous claims history
• Your insurance company
• Your state
• Your coverage
• Your deductible
• Whether you lose a safe-driver discount
• Whether accident forgiveness applies

Why At-Fault Accidents Usually Matter More

Fault is one of the major factors insurers may consider after an accident.

If you caused the accident, the insurer may view your future claim risk differently.

That can lead to a higher premium when your policy renews.

For example:

Current annual premium:

$2,000

Estimated 35% increase:

$700

Estimated new annual premium:

$2,700

The exact change depends on your insurer's rating rules and state requirements.

Will Insurance Increase After a Not-at-Fault Accident?

Not necessarily.

A not-at-fault accident can be treated differently from an accident you caused.

In some situations, the insurer may not increase your premium because of the accident.

In other situations, a claim or broader accident history may still affect pricing where permitted.

State insurance laws can also restrict how certain not-at-fault accidents are used.

This is why the calculator does not automatically assume that every accident causes a surcharge.

Does Filing a Claim Automatically Increase Your Insurance?

No.

Filing a claim does not guarantee that your premium will increase by a fixed amount.

The insurer can consider the circumstances of the claim.

For example:

• Who caused the accident?
• How much did the insurer pay?
• Was this your first accident?
• Have you filed other recent claims?
• Does accident forgiveness apply?
• Does your state restrict a surcharge in that situation?

If you want a deeper explanation, see our article Does Filing a Car Insurance Claim Increase Your Premium?

When Does Your Insurance Increase After an Accident?

Your premium does not necessarily change the moment the accident happens.

In many situations, the insurer reviews your policy information when the policy approaches renewal.

For example:

You have an accident in February.

Your current policy expires in June.

You may continue paying your existing scheduled premium until the current term ends.

The accident-related change may then appear in the renewal premium beginning with the next term.

The exact timing can vary by insurer.

Why a Minor Accident Can Still Affect Insurance

The dollar amount of damage can matter, but the word “minor” does not automatically mean the accident will have no insurance impact.

The insurer may consider:

• Claim amount
• Fault
• Your previous record
• Policy rules
• Accident-forgiveness eligibility
• State requirements

A small accident may produce little or no increase with one insurer while another insurer may treat the claim differently.

Does Claim Severity Affect the Rate Increase?

It can.

Consider two hypothetical accidents.

Accident A

Property damage claim:

$1,500

No injuries.

Accident B

Property damage and injury claims:

$50,000+

These accidents represent very different claim costs.

An insurer may consider severity along with fault and other rating factors when determining the impact on future premiums.

What Is Accident Forgiveness?

Accident forgiveness is a feature offered by some insurance companies that may prevent a qualifying accident from increasing your premium.

Eligibility can vary.

An insurer might:

• Automatically include certain accident-forgiveness benefits
• Offer accident forgiveness as an optional feature
• Require several claim-free years before eligibility
• Limit forgiveness to the first qualifying accident
• Apply different rules depending on the state

If accident forgiveness applies to your accident, the accident-related premium increase could potentially be zero.

Does Accident Forgiveness Mean Your Entire Premium Cannot Increase?

No.

This distinction is important.

Accident forgiveness generally relates to an increase caused by the qualifying accident.

Your total insurance premium could still change for unrelated reasons.

For example:

• Your insurer changes its base rates
• You move
• You buy another vehicle
• You add a driver
• Repair costs increase
• You change coverage
• You lose another discount

So even if an accident is forgiven, your renewal premium is not guaranteed to remain identical.

Losing a Safe-Driver Discount Can Also Increase Your Cost

An accident can sometimes affect your premium indirectly.

Imagine your base premium stays almost unchanged, but you no longer qualify for a safe-driver discount.

Your final bill could still increase.

Example:

Standard premium:

$2,400

Previous safe-driver discount:

$300

Previous price:

$2,100

If that $300 discount disappears:

New price:

$2,400

Your insurance cost has increased even without describing the entire $300 as a traditional accident surcharge.

How Long Does an Accident Affect Car Insurance Rates?

An accident can affect insurance pricing for several years.

A common range is around three to five years, although the actual period varies by insurer, state, accident type, and driving record.

This does not necessarily mean your premium stays at exactly the same higher amount for that entire period.

The effect may:

• Remain similar
• Decrease over time
• Disappear after the insurer's lookback period
• Interact with new accidents or violations
• Change when other policy factors change

For more detail, read How Long Does an Accident Stay on Your Car Insurance Record?

Why the Calculator Includes a Multi-Year Projection

The monthly increase is only part of the financial picture.

Suppose your insurance increases by:

$75 per month

That equals:

$900 per year

If the same difference continued for three years:

$2,700

If it continued for five years:

$4,500

The multi-year projection makes the potential long-term cost easier to understand.

It is not a prediction that your actual premium will remain unchanged for all of those years.

Accident Insurance Increase Over 3 Years

Here is another example.

Current annual premium:

$2,200

Estimated accident-related increase:

30%

Annual increase:

$660

Estimated new annual premium:

$2,860

If the $660 difference continued for three years:

$660 × 3 = $1,980

That is nearly $2,000 in additional insurance cost.

Accident Insurance Increase Over 5 Years

Now assume the same $660 annual difference continued for five years.

$660 × 5 = $3,300

This shows why comparing insurers after an accident can become worthwhile even if another company is only moderately cheaper.

Can an Accident Increase Minimum-Coverage Insurance?

Yes, an accident can potentially affect liability-only or minimum-coverage premiums as well as full coverage.

The dollar increase may differ because the starting premiums and coverages are different.

Example:

Minimum-coverage premium:

$700 per year

Estimated 30% increase:

$210

New estimated annual cost:

$910

Can an Accident Increase Full-Coverage Insurance?

Yes.

Because full-coverage policies generally have higher premiums than minimum-coverage policies, the dollar increase can be substantial even when the percentage increase is similar.

Example:

Full-coverage premium:

$2,500 per year

40% increase:

$1,000

New estimated annual premium:

$3,500

Will Your Deductible Change After an Accident?

An accident-related premium increase is different from your deductible.

Your deductible is the amount that applies to certain covered claims according to your policy.

Your premium is the price you pay for insurance coverage.

For example:

Collision deductible:

$500

Annual premium:

$2,400

If you have a covered collision claim, you may be responsible for the applicable $500 deductible.

Your insurer may also later adjust your premium.

These are separate costs.

See What Is a Car Insurance Deductible and How Does It Work? for a detailed explanation.

Does the Amount of Your Deductible Determine the Accident Surcharge?

Not directly.

A higher deductible can reduce the amount the insurer pays on certain physical-damage claims, but insurers use broader rating rules when determining post-accident premiums.

Your accident-related change is not simply:

Claim amount minus deductible.

Insurance pricing is more complicated than that.

What If You Do Not File a Claim?

Not filing a claim does not automatically mean an accident can never affect your insurance.

Depending on the circumstances, the accident may still become part of an insurance or driving record.

There may also be policy requirements about reporting accidents.

Do not hide an accident from your insurer solely to try to prevent a premium increase.

Follow the reporting requirements that apply to your policy and state.

What Happens After an Accident With No Damage Claim?

If there is no insurance payment, the effect on your premium can depend on the insurer and how the event is recorded.

A very small accident handled without a claim does not necessarily produce the same outcome as a large at-fault collision claim.

Again, there is no reliable universal percentage.

Does a Comprehensive Claim Increase Insurance Like an Accident?

Not necessarily.

Comprehensive claims involve events that are generally different from at-fault driving collisions.

Examples can include:

• Theft
• Vandalism
• Hail
• Flood damage
• Fire
• Falling objects
• Animal collisions in some policies

A comprehensive claim may affect premiums differently from an at-fault collision depending on the insurer and state.

If your vehicle was damaged by flooding, see Does Auto Insurance Cover Flood Damage to a Car?

Does a Windshield Claim Increase Insurance?

Glass claims are also different from major at-fault collisions.

Whether a windshield claim affects your premium can depend on your insurer, state, claim history, and glass coverage.

For information about coverage itself, see Does Car Insurance Cover Windshield Replacement?

How an Accident Can Affect Your Renewal Premium

When your renewal arrives, compare it with your current policy carefully.

Do not look only at the final dollar amount.

Check whether anything else changed at the same time.

For example:

• Coverage limits
• Deductibles
• Vehicles
• Drivers
• Address
• Discounts
• Mileage
• Insurer base rates

If your premium increased after an accident, the entire increase may not necessarily be caused by that accident alone.

How to Calculate the Percentage Increase on Your Actual Renewal

If you already have your new renewal premium, you can calculate the actual percentage increase.

Use:

Percentage Increase = (New Premium − Old Premium) ÷ Old Premium × 100

Example:

Old six-month premium:

$1,000

New six-month premium:

$1,350

Difference:

$350

Calculation:

$350 ÷ $1,000 × 100 = 35%

Your renewal premium increased by:

35%

How to Calculate the Dollar Increase

The dollar calculation is even simpler.

New Premium − Old Premium = Additional Cost

Example:

New annual premium:

$3,100

Previous annual premium:

$2,300

Additional annual cost:

$800

Monthly-equivalent increase:

$800 ÷ 12 = about $66.67 per month

What If Your Insurance Increased More Than Expected?

If the renewal increase is much larger than expected, review your renewal documents before assuming the accident is the only cause.

Ask your insurer whether:

• An accident surcharge was applied
• A safe-driver discount was removed
• Another discount changed
• Your coverage changed
• Your state or territory experienced a general rate adjustment
• Another driver or vehicle affected the policy

You can also request quotes from other insurers.

Should You Switch Insurance Companies After an Accident?

You are not automatically required to stay with the same insurer after an accident.

Insurance companies can price the same driver differently.

One insurer may apply a larger post-accident increase than another.

But when comparing quotes, use the same:

• Drivers
• Vehicles
• Liability limits
• Collision coverage
• Comprehensive coverage
• Deductibles
• Optional protections

Otherwise, a cheaper quote may simply provide less coverage.

You can use our Best Car Insurance Companies Finder to identify companies you may want to compare.

How to Find Cheaper Car Insurance After an Accident

An accident does not mean you should accept the first renewal price you receive.

Consider several approaches.

Compare Multiple Quotes

Insurers use different rating models, so post-accident prices can vary substantially.

You can also explore our Top 10 Cheapest Car Insurance Companies tool.

Review Available Discounts

Ask whether you still qualify for discounts related to:

• Bundling
• Multiple vehicles
• Automatic payments
• Paperless billing
• Low mileage
• Approved telematics programs
• Other insurer-specific programs

Review Your Deductible

A higher deductible can sometimes reduce your collision or comprehensive premium.

But make sure you could afford the higher out-of-pocket amount after another claim.

Do Not Reduce Important Coverage Blindly

A large rate increase can make reducing coverage tempting.

But removing useful protection simply to lower the bill can create much larger financial exposure after another accident.

Review what your policy actually covers before making changes.

Can Your Insurance Rate Go Back Down?

Potentially.

An accident does not necessarily affect your premium forever.

As time passes without additional accidents or violations, the accident may eventually move outside the insurer's rating period.

Your future rate can also change because of:

• Your driving record
• Insurance company pricing
• Coverage changes
• Vehicle changes
• Available discounts
• Your location
• Other rating factors

There is no guarantee that your premium will return to exactly what you paid before the accident because insurance prices themselves change over time.

Can Several Accidents Increase Insurance More?

Multiple accidents or claims can have a more serious effect than one isolated incident.

An insurer may view repeated accidents as a higher risk pattern.

Depending on the circumstances, this can lead to:

• Higher premiums
• Loss of discounts
• Stricter underwriting
• Difficulty finding certain coverage
• Nonrenewal in some situations

The calculator should therefore be used only for the percentage you choose to model. It does not attempt to predict an insurer's underwriting decision.

Can an Accident Cause Your Insurance Company to Drop You?

One accident does not automatically mean your insurer will cancel or refuse to renew your policy.

However, insurers may make underwriting decisions based on claim history, driving history, severity, state rules, and other factors.

Multiple serious incidents can create a different situation from one ordinary accident.

What Is the Difference Between Cancellation and Nonrenewal?

Cancellation generally refers to ending a policy before its scheduled expiration date.

Nonrenewal means the insurer decides not to offer another policy term when the existing one ends.

The rules and notice requirements can differ.

A higher accident-related premium is also different from cancellation or nonrenewal.

What If Someone Else Was Driving Your Car During the Accident?

The insurance outcome can depend on who was driving, whether that person was permitted to use the car, the policy terms, and other circumstances.

If someone else was driving your vehicle, see Does Car Insurance Cover Someone Else Driving Your Car?

The premium impact can still depend on how the claim is handled and the insurer's rating rules.

What If the Other Driver Had No Insurance?

If an uninsured driver caused the accident, uninsured motorist coverage may become relevant depending on your policy and state.

That situation is different from causing an at-fault accident yourself.

See What Is Uninsured Motorist Coverage and Do You Need It? for more information.

Can the Calculator Predict Your Exact Renewal Rate?

No.

The calculator performs transparent arithmetic based on the percentage you enter.

It cannot know your insurer's future underwriting or rating decision.

For example, entering a 40% increase means:

“Show me what my insurance would cost if it increased by 40%.”

It does not mean:

“My insurer will definitely increase my premium by 40%.”

This distinction is important.

Why the Calculator Uses Manual Percentage Input

No single automatic accident percentage would be accurate for everyone.

One insurer may apply little or no increase in a particular situation.

Another may apply a significant increase.

The calculator therefore lets you enter any percentage you want to test.

You can also run several scenarios.

For example:

• Scenario 1: 20% increase
• Scenario 2: 35% increase
• Scenario 3: 49% increase
• Scenario 4: 60% increase

This gives you a range rather than pretending one number is guaranteed.

Accident Insurance Increase Scenario Comparison

Assume your current premium is:

$200 per month

20% Increase

New premium:

$240 per month

Extra annual cost:

$480

35% Increase

New premium:

$270 per month

Extra annual cost:

$840

49% Increase

New premium:

$298 per month

Extra annual cost:

$1,176

60% Increase

New premium:

$320 per month

Extra annual cost:

$1,440

Testing multiple percentages can be more useful than relying on one nationwide average.

Frequently Asked Questions About Insurance Increases After an Accident

How much does insurance usually increase after an accident?

There is no fixed percentage. Recent national rate analysis has found an average increase of roughly 49% for a sample full-coverage driver after one at-fault accident, but actual increases vary significantly by insurer, state, driver, claim, and policy.

Will my insurance definitely increase after an accident?

No. Whether your premium changes depends on factors including fault, claim severity, state rules, driving history, insurance company practices, and accident-forgiveness eligibility.

How long does an accident affect insurance?

An accident can commonly affect insurance pricing for around three to five years, but the exact period varies by insurer and state.

When will my insurance go up after an accident?

A rate change often appears at a future policy renewal rather than immediately after the accident, although timing varies by insurer.

Does insurance go up after a minor accident?

It can. The result depends on fault, claim amount, your insurer, state rules, driving record, and whether accident forgiveness applies.

Will insurance increase if the accident was not my fault?

Not necessarily. Some insurers and states treat not-at-fault accidents differently. The effect can be smaller or nonexistent depending on the situation.

Does accident forgiveness prevent a rate increase?

A qualifying accident-forgiveness benefit may prevent an accident-related surcharge. Eligibility and rules vary by insurer and state.

Can my insurance still increase with accident forgiveness?

Yes. Your overall premium may change for reasons unrelated to the forgiven accident, such as general insurer rate changes, vehicle changes, address changes, coverage adjustments, or other rating factors.

Can I switch insurance companies after an accident?

Yes. You can compare quotes from other insurers. Make sure you compare similar coverage and keep continuous insurance when switching.

Can I lower my insurance after an accident?

You may be able to reduce costs by comparing insurers, reviewing discounts, adjusting appropriate deductibles, checking coverage choices, and maintaining a clean driving record going forward.

Does an accident affect minimum coverage?

It can. An accident-related increase can affect minimum-coverage policies as well as full coverage, although the dollar amounts may differ.

Does a comprehensive claim count the same as an at-fault accident?

Not necessarily. Comprehensive claims such as theft, hail, vandalism, or weather-related damage can be treated differently from at-fault collision claims.

Can the calculator tell me exactly what my insurer will charge?

No. It estimates the financial effect of a percentage increase that you manually enter. Only the insurance company can determine your actual renewal premium.

Why does the calculator ask for projection years?

The projection shows how much additional money you could pay over several years if the entered annual premium difference remained the same.

Is the multi-year cost guaranteed?

No. Insurance premiums can change each renewal. The projection is a mathematical scenario rather than a prediction of future rates.

Accident Insurance Increase Calculator: The Bottom Line

An Accident Insurance Increase Calculator can help you understand how a possible accident-related premium increase could affect your budget.

Start with your actual current premium.

Then enter:

• Your premium period
• The percentage increase you want to test
• The number of years you want to project

The calculator can estimate:

• Your new premium
• Your additional payment per billing period
• Your monthly-equivalent cost
• Your annual-equivalent cost
• Your additional annual expense
• Your projected multi-year additional cost

The most important thing to remember is that no online calculator can know exactly how an insurer will price your policy after an accident.

At-fault status, claim severity, driving history, insurer rules, state laws, discounts, accident forgiveness, and other factors can all affect the final result.

Use the calculator to test realistic scenarios and understand the financial impact of different percentage increases.

When your actual renewal arrives, compare the new premium with your old premium and request other quotes if the increase is significant.

For additional tools, visit our Insurance Calculators, compare companies using our Best Car Insurance Companies Finder, or browse our Auto Insurance Articles.