Raising your deductible is the fastest single move that lowers an insurance premium — but it is also a bet. You pay less every month, and in exchange you agree to pay more out of pocket if something goes wrong. The question is never "will it save me money?" — it always does on the premium. The real question is "am I likely to come out ahead overall?"
This calculator answers exactly that. Enter your current premium and deductible, pick a new one, and see your estimated new premium, your extra claim risk, and your break-even point — the number of claim-free years after which the savings outweigh the risk. It takes under a minute, and it works for both car and home insurance.
Compare every deductible level
Estimated numbers for the same policy at each common deductible — your current deductible is highlighted.
| Deductible | Est. annual premium | Savings vs now | Extra risk per claim | Break-even (years) |
|---|
Break-even is the extra out-of-pocket risk per claim divided by the annual premium savings. If you go claim-free longer than this, raising the deductible saves you money overall.
How we estimate
This tool is deliberately simple and transparent. Every estimate follows the same formula:
Estimated new premium = current premium × deductible index(new) ÷ deductible index(current)
The index is built from standard industry rules of thumb for the deductible-sensitive part of the premium, with $1,000 set as the baseline of 1.00:
- Car insurance index: $250 → 1.18 · $500 → 1.10 · $1,000 → 1.00 · $2,500 → 0.90. Roughly: moving from $500 to $1,000 saves about 10%; from $1,000 to $2,500 saves about another 10%.
- Home insurance index: $500 → 1.10 · $1,000 → 1.00 · $2,500 → 0.92 · $5,000 → 0.86. Home policies behave similarly, with savings flattening at higher deductibles.
- Break-even: (new deductible − current deductible) ÷ annual savings. This is the number of claim-free years after which the premium savings outweigh the extra you would pay on a single claim.
Two simplifications to know about: first, this applies the index to your whole premium, while in reality only the deductible-sensitive coverage (collision and comprehensive for cars; property coverage for homes) responds — liability does not, so savings on a real policy may be a bit smaller. Second, the index uses averages; your insurer may discount more or less. Treat the result as a planning number and confirm with a real quote.
Frequently asked questions
How accurate is this deductible savings calculator?
It is a planning estimate, not a quote. The tool uses standard industry rules of thumb: raising your deductible from $500 to $1,000 typically cuts the deductible-sensitive part of your premium by roughly 10%, with diminishing returns at higher deductibles. Real insurers price differently, so always get an actual quote before changing your policy.
Does raising my deductible always save money?
It always lowers your premium, but it does not always lower your total cost. Raising your deductible is a bet that you will not file a claim soon. If you file one, the extra out-of-pocket cost can wipe out years of savings. Check the break-even point above against how often you realistically file claims.
What deductible should I choose?
A common rule of thumb is to pick the highest deductible you could comfortably pay out of pocket tomorrow without touching credit. Many drivers land on $1,000. If your emergency fund cannot cover a $2,500 deductible, the extra savings are not worth the risk.
Will a higher deductible change my coverage?
No. Your deductible only changes how much you pay out of pocket before the insurer pays a claim. Your coverage limits, covered perils and liability protection stay exactly the same.
Keep reading: insurance guides
An estimate is a starting point — these guides help you turn it into real savings:
- Cheapest Car Insurance for New Drivers in Texas (2026 Guide) — average costs, new-driver discounts and 9 ways to cut your premium.
- Home Insurance for First-Time Buyers — how deductibles, coverage limits and discounts shape what you pay.