"Raise your deductible to save money" is the most repeated insurance tip and the least often finished. Whether it saves you money depends on two numbers you can look up in about a minute.
Take the extra risk you are accepting, divide by the annual premium saving, and you get the number of claim-free years to break even. Under about three years, the higher deductible is usually worth it. Beyond five, usually not. And none of it applies if you cannot produce the deductible in cash tomorrow — that is the constraint that overrides the arithmetic.
The calculation
Three steps.
1. Find the extra risk. New deductible minus old deductible. Going from $500 to $1,000 means $500 more exposure per claim.
2. Find the annual saving. Ask for both quotes from the same insurer. Do not estimate this — the saving varies enormously between companies and this is the number people assume instead of checking.
3. Divide.
break-even years = extra risk ÷ annual savingA worked example, with illustrative figures — use your own quotes, not these:
| Deductible $500 → $1,000 | extra risk $500 |
| Premium $1,200 → $1,080 | saving $120/yr |
| $500 ÷ $120 | ≈ 4.2 years |
So you need to go about four years without a collision claim before the higher deductible has paid for itself. Whether that is likely is a question about you, not about insurance.
How to read the answer
Under 3 years — the higher deductible is usually the better trade. You break even quickly and every year after is profit.
3 to 5 years — genuinely marginal. Decide on cash comfort rather than arithmetic.
Over 5 years — the saving is too small for the extra risk. Keep the lower deductible.
The direction of the result matters more than the precision. If the answer comes out at seven years, no amount of refinement changes the decision.
A deductible is not a budgeting line — it is cash you must hand over before the repair begins, on a day you did not choose. If a $1,000 deductible would go on a credit card at 24% interest, the "saving" of $120 a year is a fiction: one claim erases several years of it in interest alone. Never carry a deductible larger than you can pay from savings today. That rule outranks every calculation on this page.
The second effect nobody mentions
A higher deductible does something beyond the premium: it makes small claims not worth filing.
That sounds like a loss and is often a gain. Claims history is itself a rating factor, so a $700 repair you pay yourself keeps your record clean, where claiming it might raise your premium for three to five years and cost more than the $700 in the end.
With a $250 deductible, more damage is technically claimable — and claiming more is not always to your advantage.
Setting the two deductibles differently
Comprehensive and collision usually carry separate deductibles and can be set independently. A common approach is a lower comprehensive and a higher collision deductible, on the logic that hail, theft, fire and glass are mostly outside your control while collisions are partly within it.
Whether that split saves money is the same calculation run twice, with each coverage's own quoted saving.
Where the tip goes wrong
Assuming the saving without checking it. On some policies raising the deductible saves very little. The tip is repeated as if the saving is always meaningful. It is not.
Ignoring claim frequency. Someone parking on a city street with three claims in five years should not be reasoning from a break-even of four claim-free years.
Treating it as permanent. You can change a deductible at renewal. If your savings position improves, revisit it.
Confusing it with liability limits. Raising a deductible saves money at a known cost. Cutting liability limits saves money at an unbounded one — see how premiums are calculated.
This is general information, not financial advice — see our disclaimer.
Frequently asked questions
How do I decide between a $500 and $1,000 deductible?
Divide the extra $500 of risk by the annual premium saving. That gives the number of claim-free years needed to break even. If it is under about three years the higher deductible usually wins; well over five and it usually does not.
Does a higher deductible always save money?
It always lowers the premium, but not always by enough. The saving on some policies is small, and a small saving against $500 more exposure is a bad trade. You have to see the actual quoted numbers.
What is the most common mistake?
Choosing a deductible you cannot pay tomorrow. A deductible is not a budgeting concept — it is cash you must produce before the repair starts, at a moment you did not plan for.
Do comprehensive and collision have separate deductibles?
Usually yes, and you can often set them differently. Many people run a lower comprehensive deductible since hail, theft and glass are largely outside their control.
Does a higher deductible affect anything besides price?
Yes, indirectly. It makes small claims not worth filing, which keeps claims off your record — and a claims-free history is itself a rating factor.
Sources
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