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💰 Financial · Rex's Toolbox

Matching Gift Campaign Calculator

How much a match challenge lifts total giving — and what it truly costs.

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Rex says

Money math without the spreadsheet headache. Plug in your numbers and I'll show you exactly where the dollars land.

Try a scenario

Click to load — tweak from there.

Inputs

Result

Total campaign raise with match

$114,180

Donor giving with the match live

$84,180

Incremental donor dollars from the match

$24,180

Genuinely new money after promo cost

$32,180

Match dollars actually unlocked

$30,000

Promo cost per incremental dollar

$0.17

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How to use this

  1. 1Enter expected raise without a match ($).
  2. 2Enter match pool committed ($).
  3. 3Enter lift in response rate (%).
  4. 4Enter lift in average gift (%).
  5. 5Enter promotion cost ($).
  6. 6Enter share of match donor's gift that was coming anyway (%).
  7. 7Read your total campaign raise with match on the right — it updates as you type.
  8. 8Hit Share to keep the scenario or send it to someone.

About this calculator

A match works by raising response rate and average gift, not by magically doubling money. Model the lift your match generates, subtract the matching funds themselves, and see whether the challenge produced incremental dollars.

FormulaMatched total = baseline × (1 + lift) + match pool; incremental = matched total − baseline − match pool.

Worked example

Using the values the calculator loads with:

Inputs

  • Expected raise without a match: 60000 $
  • Match pool committed: 30000 $
  • Lift in response rate: 22 %
  • Lift in average gift: 15 %
  • Promotion cost: 4000 $
  • Share of match donor's gift that was coming anyway: 60 %

Results

  • Total campaign raise with match: $114,180
  • Donor giving with the match live: $84,180
  • Incremental donor dollars from the match: $24,180
  • Genuinely new money after promo cost: $32,180
  • Match dollars actually unlocked: $30,000
  • Promo cost per incremental dollar: $0.17

What each field means

Inputs

Expected raise without a match ($)
The expected raise without a match used in the calculation, measured in $. Starts at 60000 $ so you have a working example on load.
Match pool committed ($)
The match pool committed used in the calculation, measured in $. Starts at 30000 $ so you have a working example on load.
Lift in response rate (%)
The lift in response rate used in the calculation, measured in %. Starts at 22 % so you have a working example on load. Accepted range: 0–200 %.
Lift in average gift (%)
The lift in average gift used in the calculation, measured in %. Starts at 15 % so you have a working example on load. Accepted range: 0–200 %.
Promotion cost ($)
The promotion cost used in the calculation, measured in $. Starts at 4000 $ so you have a working example on load.
Share of match donor's gift that was coming anyway (%)
The share of match donor's gift that was coming anyway used in the calculation, measured in %. Starts at 60 % so you have a working example on load. Accepted range: 0–100 %.

Results

Total campaign raise with match
Returned as a money amount in US dollars and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
Donor giving with the match live
Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
Incremental donor dollars from the match
Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
Genuinely new money after promo cost
Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
Match dollars actually unlocked
Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
Promo cost per incremental dollar
Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.

FAQ

Do matches really work?

Field experiments consistently find matches raise participation, but larger ratios like 3:1 do not outperform 1:1 by much. The existence of a deadline and a match does the work, not the multiplier.

Is it dishonest if the match donor was giving anyway?

It is standard practice and legal as long as the funds are genuinely committed and contingent on the challenge being met. What is not acceptable is announcing a match you have not actually secured.

Accuracy and limitations

  • Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
  • Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.
  • This is educational maths, not financial advice. Check anything contractual with the lender or your accountant.

Related tools

Fundraising Goal Calculator

Turn a campaign goal into the gift pyramid and prospect count it requires.

Peer-to-Peer Fundraising Calculator

Participants, activation rate, and average raised to a campaign total.

Cite this calculator

Writing about this topic? Grab a citation — every link helps keep these tools free.

APA
RevenueLab. (2026). Matching Gift Impact Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/matching-gift-impact
HTML
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/matching-gift-impact" target="_blank" rel="noopener">Matching Gift Impact Calculator — RevenueLab</a> (2026).</p>
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Source: [Matching Gift Impact Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/matching-gift-impact) (2026).
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