Buy out the lease or hand it back.

If your lease residual is 15,000 and the market value of the same car is 18,000, buying out gives you 3,000 of instant equity even after a typical 400 fee. If the residual is above market, hand it back — that is precisely what the leasing company is hoping you do not notice.

What the result means

Equity gain is market value minus residual minus fees. A positive number means the buyout creates value; a negative number means handing back is cheaper. The tool shows the absolute equity figure and the percentage gain on the residual.

Look up market values from comparable listings rather than rough rules of thumb. Mileage, condition, and trim affect the comparison meaningfully.

A worked example

Try the defaults: contract residual buyout of 15,000, current market value of 18,000, buyout fees of 400. The tool returns 2,600.00. You can adjust any input and the result updates as you type — no submit button, no reload. That's the real power here: seeing how sensitive the output is to one or two assumptions.

What moves the number most

The result responds to Contract Residual Buyout, Current Market Value, and Buyout Fees. Not every input has equal weight. Flip one at a time toward extreme values to feel which ones move the needle most for your situation.

The formula behind this

Equity is market value less residual buyout less fees. A positive figure favours buyout; negative favours handing the vehicle back. Tax on subsequent sale, financing costs and warranty considerations are out of scope. Everything the calculator does is shown in the formula box below, so you can check the math against your own spreadsheet if you want.

Using this without guilt

The figure here isn't a verdict on whether the spending is "worth it". That judgment is yours to make. What the number does is shift the question from "can I afford this?" to "is this what I want my money doing over a decade?". Both questions matter.

What this doesn't capture

The tool prices the money; it can't weigh the enjoyment. A coffee habit, gym membership, or streaming bundle might cost what the math says but deliver value that's harder to quantify. Use the number to make the trade-off visible — the decision is yours.