Configure vehicles and discounts
Example data table
This example mirrors a 3-vehicle household with common discount settings.
| Vehicle | Base premium | Type | Mileage | Deductible | Tiered multi-car rate |
|---|---|---|---|---|---|
| 1 | $1,200 | Sedan | 8,000–12,000 | $500 | 15% |
| 2 | $900 | SUV | 8,000–12,000 | $500 | |
| 3 | $800 | Pickup | > 15,000 | $1,000 |
Formula used
This calculator estimates premiums in three layers: per-vehicle adjustments, policy discounts, then taxes and fees.
- Adjusted vehicle premium: Adjustedᵢ = Baseᵢ × TypeFactorᵢ × MileageFactorᵢ × DeductibleFactorᵢ
- Total premium before discounts: P = Σ Adjustedᵢ
- After multi-car: P₁ = P × (1 − MultiRate)
- Other discounts (stacked, capped): discounts apply sequentially on remaining premium; combined non-multi discounts are capped by your Max stacked discount cap.
- Tax and fees: Tax = P₂ × TaxRate, Final = P₂ + Tax + PolicyFee + InstallmentFees
Allocated per-vehicle “after discount” values are distributed proportionally to each vehicle’s share of Adjustedᵢ.
How to use this calculator
- Choose the number of vehicles, then confirm each vehicle card is visible.
- Enter each base premium from a recent bill or quote.
- Select type, mileage, and deductible to approximate risk differences.
- Pick a tiered program or enter a custom multi-car rate.
- Add other discounts, taxes, fees, and your payment method.
- Press Submit to view totals, chart, and exports above.
Multi-vehicle pricing baseline
Insurers often rate each vehicle separately, then combine them into one policy. A common baseline range is $600–$1,800 per vehicle annually, depending on coverage limits, deductibles, and driving history. For many households, combining vehicles can typically save $150–$600 yearly overall. When three vehicles are insured together, the combined pre-discount total can easily exceed $3,000. Tracking the baseline first helps you see whether discounts are meaningful.
Typical discount tiers by vehicle count
Multi-car programs usually scale with the number of vehicles: 2 vehicles often receive 5%–12%, 3 vehicles 10%–18%, and 4 or more vehicles 15%–25%. Some carriers cap the multi-car component near 25% and shift additional savings into other programs. Your effective rate should be measured as total discounts divided by the pre-discount premium.
How stacking changes the final premium
Discounts are frequently applied sequentially, not added. For example, a $4,000 premium with a 15% multi-car reduction becomes $3,400. Adding a 10% bundle discount then yields $3,060, not $3,000. That difference is $60 per year. This calculator shows both the dollar savings and the effective percentage so comparisons stay fair.
Coverage choices that move savings most
Deductible changes can rival discounts. Raising collision deductibles from $500 to $1,000 may reduce collision portions by roughly 5%–15%, depending on the vehicle. Liability limits also matter: moving from 50/100/50 to 100/300/100 can add hundreds annually. Use the per-vehicle inputs to test combinations and keep your total premium aligned with risk tolerance.
Review cadence and renewal checkpoints
Re-quote at least once each renewal and after major life events. A new driver can increase a single vehicle’s cost by 20%–60%, while adding telematics may cut eligible portions by 5%–20%. Compare annual and monthly totals, then verify taxes and policy fees. Small fixed fees are larger on lower premiums, affecting effective discounts. If you pay $3 monthly installment fees, that adds $36 annually, reducing the apparent discount by about one point percentage.
FAQs
1) What is a multi-car discount?
It is a pricing reduction applied when two or more vehicles share one policy. The rate usually increases with vehicle count and varies by insurer and eligibility rules.
2) Do discounts apply before taxes and policy fees?
Most carriers calculate discounts on the premium first, then add taxes and fixed fees. This calculator separates premium savings from added charges so you can compare totals consistently.
3) Can each vehicle use different coverage settings?
Yes. Enter a separate base premium and risk factors for every vehicle. The calculator allocates policy-level discounts across vehicles in proportion to their adjusted premiums.
4) What if my insurer stacks discounts differently?
Some programs stack discounts sequentially, while others cap or exclude certain combinations. Use the program selector and custom rate fields to mimic your quote, then validate against the insurer’s worksheet.
5) How often should I re-check my multi-car savings?
Review at every renewal and after changes like moving, adding a driver, or buying a vehicle. Even a small rate shift can change your annual savings by hundreds.
6) What should I export for recordkeeping?
Save the CSV for numeric comparisons and the PDF for sharing with family or an agent. Keep both with your renewal notice to track discount changes over time.