RATIOXA CARS · Decision tool

Lease or buy?

Compare leasing, depreciation, finance, resale value and typical contract costs over the same period.

14 inputsDetailed comparisonSaved locally on this device.

Your assumptions

Which option has the lower economic cost under your assumptions?

● Saved locally on this device.
Example scenario
Start from
€
Example assumption
€
Example assumption
€
Example assumption
€
Example assumption
months
Example assumption
DECISION PACK

Lease or buy?

Created: 18/08/2026 · lease-or-buy@5.0

Important: Scenario calculation based on your assumptions; not purchase or financing advice.

Result · Why?

Lease leads by €168

Payments alone are not comparable: principal builds ownership, while all lease contract payments remain cost.

Difference€168
Effective lease payment€543
Purchase cost per month€548

Lease

Lease payments€14,364
Upfront payment€3,500
Delivery€1,190
Return cost€500

Buy

Depreciation€15,900
Finance interest€3,422
Finance fees€250
Registration€150

Break-even

Resale-value crossover

At this resale value lease and purchase have equal economic cost.

€27,168

Result robustness

Sensitive result

A realistic change to one important assumption may reverse or materially narrow this result.

  1. Purchase priceApprox. change in result: €4,711
  2. Expected resale valueApprox. change in result: €2,700
  3. Monthly lease paymentApprox. change in result: €1,436

Development

Lease / Buy

Text summary of the chart
DevelopmentLeaseBuy
0€4,690€400
3€5,887€2,111
6€7,084€3,804
9€8,281€5,480
12€9,478€7,137
15€10,675€8,776
18€11,872€10,397
21€13,069€11,999
24€14,266€13,582
27€15,463€15,146
30€16,660€16,691
33€17,857€18,216
36€19,554€19,722

RATIOXA STORY

Your Decision Story

  1. 1

    Lease: €19,554

  2. 2

    Buy: €19,722

  3. 3

    Lease leads in the base case.

Calculation Health

Quick estimate

Add more of your own values to strengthen the scenario.

  • + Purchase price
  • + Monthly lease payment
  • + Lease upfront payment

RATIOXA IMPACT MAP

What matters most?

Purchase price€4,711
Expected resale value€2,700
Monthly lease payment€1,436
Comparison period€1,276
Extra monthly purchase running cost€360
Loan APR€352
Higher impact →
×

Key insight

Your decision is most vulnerable to changes in Purchase price.

Payments alone are not comparable: principal builds ownership, while all lease contract payments remain cost.

SCENARIO RANGE · DETERMINISTIC

Stress-test this decision

Very close
Base caseLease€168
Purchase price · −Buy€4,543 · Result changes
Expected resale value · −Lease€2,868 · Winner holds
Monthly lease payment · −Lease€1,604 · Winner holds
Comparison period · +Buy€1,108 · Result changes

TIME HORIZON

How the decision changes over time

Period 0Buy€4,290

Buy is stronger at period 0.

RATIOXA ×

Resale-value crossover

At this resale value lease and purchase have equal economic cost.

Crossover€27,168

Compare everything

LeaseBuy
Result value€19,554€19,722
Difference€168—
Lease payments€14,364€15,900
Upfront payment€3,500€3,422
Delivery€1,190€250
Return cost€500€150

PRACTICAL NEXT STEP

Before you decide

● Saved locally on this device.

SCENARIO RANGE

Conservative · Base · Optimistic

Locked assumptions
CONSERVATIVEBuy€4,543
BASELease€168
OPTIMISTICLease€4,879

TRUST CHECK

Fair Comparison Check

!
Review before deciding
  • !Same comparison horizon
  • ✓Comparable cash flows
  • ✓Residual values and balances included
  • ✓Inputs are internally consistent
Not included in the model
  • Contract terms, eligibility and taxes outside the entered values
  • Personal risk tolerance and liquidity needs
  • Professional legal, tax, finance or energy advice

Assumption freshness

Decision readiness

○
14 core inputs still use example values

0/14 inputs replaced with your own or transferred values · 4 real-world details still worth checking

  • ○ Check excess mileage cost
  • ○ Check return conditions
  • ○ Confirm delivery cost
  • ○ Compare the cash offer

TRANSPARENT MATH

Formula inspector

Calculation steps

  1. Lease cost includes all payments, upfront payment, delivery, return and excess mileage.
  2. Purchase cost equals depreciation plus interest, fees and decision-relevant running cost.
  3. When finance extends past the horizon, only interest incurred by the comparison date counts; the remaining balance stays a liability.
  4. Resale-value and payment crossovers are solved from the same cost function.

Substitution with your values

Sum of displayed components A = 14364.00 + 3500.00 + 1190.00 + 500.00 = 19554.00Sum of displayed components B = 15900.00 + 3421.89 + 250.00 + 150.00 = 19721.89Total: 19554.00 / 19721.89

Important: Scenario calculation based on your assumptions; not purchase or financing advice.

WHAT-IF

Snapshot current scenario

IMPORTANT DOCUMENTS

Prepare the decision

● Saved locally

QUESTIONS TO ASK

Ask before you sign

  1. How is excess mileage charged?
  2. Which return standards apply?
  3. Are delivery and registration included?

EXTERNAL OFFERS · SEPARATE FROM THE CALCULATION

Explore real offers

The independent RATIOXA result above never changes based on these links.

External websites are independent from RATIOXA. No commercial partnership is implied.

Next useful step

Did this help you understand the decision?