Insurance Premium Change Calculator: Renewal Hike or Cut
Work out the percentage change between two insurance premiums — the figure that turns a vague 'rate went up' into a clear number you can compare against the market and against shopping the policy.
Adjust the inputs and select Calculate for a full breakdown.
Compare Common Scenarios
How the numbers shift across typical situations for this calculator:
| Scenario | Premium change | Dollar change |
|---|---|---|
| $1,200 to $1,380 | 15.00% | 180 |
| $800 to $720 | -10.00% | -80 |
| $2,400 to $3,000 | 25.00% | 600 |
| $650 to $680 | 4.62% | 30 |
How This Calculator Works
Enter the previous premium and the renewal premium for the same coverage period. The calculator subtracts one from the other for the dollar change and divides by the prior premium to give the percentage move.
The Formula
Percentage Change
Old is the starting value, New is the ending value
Worked Example
A homeowners policy rising from $1,200 to $1,380 a year is a 15% increase — $180 more this year. US homeowners saw average increases of 10% to 20% per year through the recent insurance market cycle, so 15% sits at the upper end of normal but is not unusual.
Key Insight
Insurance renewal increases are usually negotiable, especially on personal lines. A 15% hike at renewal is often the trigger to shop competing carriers — most consumers who do find a meaningful saving, and the threat of switching alone sometimes brings the original carrier's quote down.
Frequently Asked Questions
How is insurance premium change calculated?
Subtract the prior premium from the new premium, divide by the prior premium, and multiply by 100. A $1,200 to $1,380 move is a 15% increase.
Why do premiums rise even without claims?
Industry-wide loss trends — hurricane seasons, vehicle repair costs, healthcare inflation — push premiums up across the book even for claim-free policyholders. Your individual risk score matters less than the carrier's combined ratio.
Should I shop on every renewal?
Shop seriously when the renewal increase exceeds about 10%, when life changes (new home, marriage, new vehicle), or every three years even without a trigger. Loyalty often costs money in personal lines.
Can I negotiate the renewal?
Often yes. Ask the carrier to match a competing quote, request available discounts, raise deductibles, or drop unused coverage. Many renewal increases are softened simply by asking.
Does this work for health insurance?
Yes — but health premiums change with employer plan changes, ACA subsidy shifts, and age bands, not only the carrier's pricing. The math is the same; the drivers of the change are different.
Related Calculators
Methodology & Review
The change is the new premium minus the old; the percentage is that change divided by the old premium. The figure works for any insurance line — auto, home, health, life — across any cadence, as long as both premiums are quoted for the same period.
Written by Ugo Candido · Last updated May 17, 2026.