Ireland version
How it works
Explore an explicitly chosen declining-balance vehicle-value scenario, without pretending it is a market valuation or tax depreciation schedule.
This is the Ireland planning view, with monetary inputs and outputs in EUR. A currency label does not establish that a tax rate, construction price, coverage rule or legal limit has been verified locally. The inputs and limitations below describe the actual scope.
Input query strings and outputs
Use an input name in this page’s URL as ?name=value, and join additional inputs with &. Portable shared links may instead use the compact ?ac= state parameter.
Input query strings
4-
?purchasePrice=Starting vehicle valueMoney · Required · Default: 30,000
-
?decline=Assumed annual declining-balance depreciationPercentage · Required · Default: 15
-
?residualFloor=Specified residual-value floorMoney · Required · Default: 0
-
?years=Elapsed yearsNumber · Required · Default: 5
Outputs
3-
resaleValueScenario value at selected ageCurrency · Primary output · Currency: EUR
-
valueLostValue lost over selected periodCurrency · Currency: EUR
-
retainedPercentPercentage of starting value retainedNumber
Formula
value after n years = maximum(residual floor, starting value × (1 − annual decline)^n).
Calculations retain numeric precision internally. Displayed values are rounded for readability. Quantities that must be purchased as whole units are rounded up only where the formula explicitly requires it.
Read the inputs before calculating
- Starting vehicle value: Enter the quantity described by the label.
- Assumed annual declining-balance depreciation: Enter the quantity described by the label.
- Specified residual-value floor: Enter the quantity described by the label.
- Elapsed years: Enter the quantity described by the label.
Reproducible worked example
The following is a fictional arithmetic example, not a local quote, a verified claimant or a market forecast. Its values are included so the formula can be checked. The form does not automatically confirm any verification checkbox.
| Input | Example value |
|---|---|
| Starting vehicle value | 30,000 |
| Assumed annual declining-balance depreciation | 15 |
| Specified residual-value floor | 0 |
| Elapsed years | 5 |
| Output | Calculated result |
|---|---|
| Scenario value at selected age | EUR 13,311.1594 |
| Value lost over selected period | EUR 16,688.8406 |
| Percentage of starting value retained | 44.3705 |
Interpreting a changed assumption
Start with one complete scenario and change only one input when diagnosing a difference. Recheck units, the period of every rate, whether an amount is recurring or one-off, and whether a cost is already included elsewhere. A larger calculated benefit is not evidence that an assumption is more likely to occur.
Limitations
- Prices, consumption and contract terms are entered scenarios. This is not a retail quote, tax eligibility determination or vehicle safety certification.
- Actual prices depend on age, distance, condition, model demand and market changes. This new vehicle scenario does not replace the retained universal /math/depreciation calculator.
Frequently asked questions
What does this Vehicle Depreciation Scenario result represent?
Explore an explicitly chosen declining-balance vehicle-value scenario, without pretending it is a market valuation or tax depreciation schedule. It applies the displayed formula to your inputs; it does not infer omitted facts.
Are the starting amounts verified Ireland prices or legal rules?
No. Numeric defaults are illustrative unless an input or dated reference explicitly identifies a researched component. Currency is EUR; local quotes, eligibility and unsupported rules must be entered and verified separately.
What must I check before relying on the result?
Prices, consumption and contract terms are entered scenarios. This is not a retail quote, tax eligibility determination or vehicle safety certification.
Can I compare or share different assumptions?
Change one assumption at a time and use the browser-local project or share controls. A shared URL contains the encoded input values; do not include information you do not wish to disclose.
Sources and reference scope
- DOE energy-use arithmetic — retrieved 2026-09-24. Energy consumption versus power; not a local tariff or an approval of this implementation.
- NIST unit conversion guidance — retrieved 2026-09-24. Unit definitions; geometry and financial arithmetic in these worksheets are explicitly stated.
- CFPB loan-estimate explanation — retrieved 2026-09-24. US cost components; the general amortization formula is stated separately.
These references support only their stated scope. They are not evidence that every local rule or price needed by the master expansion has been loaded.