Rebate-Adjusted Cost Calculator

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Market

Imperial · sales tax

Gross Cost (Before Rebates)

The full price before any incentives are applied.

Use the total quoted or invoiced cost.

Percentage Rebate/Tax Credit (%)

Any percentage-based incentive, like a federal tax credit.

Common examples include federal residential clean energy credits for solar, heat pumps, or other qualifying upgrades — check current rates, as they change over time and by program.

Flat Rebate Amount ($)

Any additional flat-dollar rebate, like a utility or state program.

Many utilities offer flat rebates for specific equipment (heat pump water heaters, insulation, efficient appliances) on top of any percentage-based tax credit.

Net cost after rebates

$10,000

Medium confidence

Tax credits typically reduce what you owe in taxes rather than being paid upfront like a rebate — confirm the specific mechanism and eligibility requirements for your program before counting on the savings.

Total rebates/credits: $0

Then change the inputs to see how far the answer moves.

Show calculation logic

How this was calculated

Formula source(s)

Net cost = gross cost - (gross cost x rebate percent) - flat rebate amount

Inputs used

Gross Cost (Before Rebates): 10000
Percentage Rebate/Tax Credit (%)
Flat Rebate Amount ($): 0

Intermediate steps

Total rebates/credits: $0

Final result$10,000

Confidence note: Tax credits typically reduce what you owe in taxes rather than being paid upfront like a rebate — confirm the specific mechanism and eligibility requirements for your program before counting on the savings.

What this calculation does not cover

The percentage is taken on the full gross figure before the flat amount is removed, so where a program requires a utility rebate to be deducted first and the credit worked out on what remains, the credit shown here is larger than the one you will actually receive.
Every dollar you enter as gross cost is treated as qualifying, so permits, structural repair, disposal or other line items a program excludes from its eligible base are not separated out — enter only the eligible portion when the incentive covers part of the invoice.
Nothing in the arithmetic caps either incentive: the percentage and the flat amount come off in full whatever you type, so a program's maximum dollar value has to be checked and imposed by hand before the net figure means anything.
The subtraction is never floored at zero, so a flat rebate bigger than the balance left after the percentage produces a negative net cost rather than a fully covered project.
Only one percentage slot and one flat slot exist, and the breakdown adds them into a single rebate total, so stacking several programs means summing them yourself — which matches reality only if each one is genuinely worked out on the same full base rather than on what the previous incentive left behind.

Computed in your browser — nothing you enter is uploaded. Presented in US customary units and US trade terminology. Where a formula follows a published standard, that standard and its edition are cited beside it on this page; where none governs, the page says so. Local amendments override model codes — verify against the code in force where you build.

Sources checked 2026-09-05 · in the site-wide review of 2026-09-06 · v1.0.1

Regulatory standards & verification citations1

Net cost = gross cost - (gross cost x rebate percent) - flat rebate amount

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How to calculate rebate-adjusted cost in 4 steps

Gross Cost (Before Rebates)The full price before any incentives are applied.

Percentage Rebate/Tax Credit (%)Any percentage-based incentive, like a federal tax credit.

Flat Rebate Amount ($)Any additional flat-dollar rebate, like a utility or state program.

Net cost after rebatesThe tool computes the net cost after rebates from those figures and shows the formula, its sources, and a confidence rating alongside it.

Frequently asked questions

Is a tax credit the same as a rebate?

Not quite — a rebate is often paid or credited relatively quickly after purchase, while a tax credit reduces what you owe when you file taxes, meaning you generally need enough tax liability to benefit from its full value.

Can I stack multiple incentives?

Often yes — many federal, state, and utility incentive programs can be combined, but each has its own rules and sometimes caps on stacking. Check each specific program's terms.

Do incentive rates change over time?

Yes, frequently — percentage rates for programs like federal energy tax credits have changed by legislation in the past and can change again, so always verify the current rate for your specific project timing rather than assuming a rate stays fixed.