Every insurance policy has a deductible, and most people chose theirs years ago without much thought, then never revisited it. That is a shame, because the deductible is one of the few parts of your policy you control directly, and adjusting it is often the quickest way to a lower premium.
What a deductible actually is
Simply put, it is your share of a claim. If you have a $500 deductible and a $5,000 covered loss, you pay the first $500 and the insurer pays the remaining $4,500. It exists to keep small, everyday losses off the insurer's books and to give you some skin in the game. Every policy has one, and you chose the amount.
The core tradeoff
Higher deductible, lower premium. Lower deductible, higher premium. That is the whole equation. When you raise your deductible, you are telling the insurer you will handle smaller losses yourself, and they charge you less for the privilege. The savings are real and immediate, starting at your next renewal or endorsement.
The emergency fund rule
Here is the only rule that matters: never set a deductible higher than you could comfortably pay tomorrow. A $2,500 deductible that saves you money on paper is a bad deal if a claim would put the $2,500 on a credit card you cannot clear. Match the deductible to your actual savings, not your optimism.
Home and auto deductibles work a bit differently
On auto insurance you typically have separate deductibles for collision and comprehensive, and you can set them at different levels. On home insurance there is usually one main deductible, but certain perils, like water damage or earthquake where it applies, can carry their own. Read the fine print or ask your broker to walk you through yours.
When a low deductible makes sense
If your cash flow is tight and an unexpected $1,000 bill would hurt, a lower deductible is worth the extra premium. It is also worth considering if you are financing or leasing a vehicle, since lenders want to know you can actually cover the deductible if the car is damaged. Peace of mind has a price, and sometimes it is fair.
A worked example
Say your auto policy costs $2,400 a year with a $500 collision deductible. Raising that deductible to $1,000 might save you $200 to $300 a year, though the exact number varies by insurer and profile. That means you would need about two claim-free years for the savings to cover the extra $500 you would pay if you claimed. If you rarely claim, the math favours the higher deductible quickly. If you claim often, it may not. Your broker can run your exact numbers in minutes.
When raising it makes sense
If you have solid emergency savings, rarely claim, and want the lowest sustainable premium, a higher deductible is usually the smart play. Insurance is at its best covering the big, rare losses. Handling the small stuff yourself and paying less every year is how the math is supposed to work.
Deductibles and small claims
Your deductible should also shape your claiming habits. If a repair costs less than your deductible, there is no claim to make; you pay it all. And for damage only slightly above your deductible, think carefully: the small payout may not be worth putting a claim on your record, since claims history affects future premiums. A higher deductible naturally discourages the small claims that cost you the most in the long run.
Choosing your number
- Check your savings first. Your deductible should never exceed what you can pay on short notice.
- Price the difference. Ask your broker what each deductible level costs; the savings are not always linear.
- Revisit yearly. As your savings grow, your deductible can grow with them.
- Do not go below what you need. A very low deductible on a tight budget is fine; on a healthy budget it is usually overpaying.
There is no universally right deductible, only the right one for your finances today. And because you can usually change it mid-policy, it is never a permanent decision. When in doubt, run the numbers with your broker; it takes five minutes and it might be the easiest money you save all year.