New Calculation
Monthly payment
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Effective payment
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After monthly fuel & insurance savings
Amount financed
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Interest over the loan
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Breakdown
- Taxable value (price − trade-in)
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- Sales tax
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- Fuel used, current car
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- Fuel used, new car
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- Fuel cost, current car
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- Fuel cost, new car
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- Fuel & insurance savings / yr
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- Fuel & insurance savings / mo
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Five-year savings vs. keeping your current car
Positive numbers are money saved; negative numbers are extra cost.
| Year | Payment | Fuel | Insurance | Net | Running total |
|---|---|---|---|---|---|
| Total five-year savings | -- | ||||
Five years out, counting depreciation
Each car loses value in a straight line at its brand's average five-year rate (CarEdge, 2026): the new car from its price, the current car from its trade-in value. Brand averages can hide big differences between models.
New car
- Value after five years
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- Loan still owed
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- Equity
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Current car, if kept
- Value after five years
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- Loan still owed
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- Equity
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- Extra equity in the new car
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- Five-year savings (from the table above)
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- Money down
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- Overall
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Value and loan balance over time
Solid lines are what's still owed, assuming the new loan starts this month; dashed lines are each car's estimated value. Where a car's dashed line is above its solid line, you have equity. The current car lines show what happens if you keep it instead of trading it in.
Show as a table
| Month | New car loan | New car value | Current car loan | Current car value |
|---|