Section 170(p) of OBBBA makes the federal government — and, where charitable deductions or credits exist, your state — a matching donor on every gift. The match is real, legal and unclaimed. MatchingGov exists to change the last word.
When an employer matches a donation, participation soars — the psychology of "free money for my cause" is one of the most reliable levers in fundraising. The charitable deduction is exactly the same economics with a different name. Rename it, and the behavior follows.
Abstract. Private. Arrives months later as a slightly smaller tax bill. The donor barely notices it; the nonprofit never touches it. Value evaporates into the general budget of the donor's household.
Concrete. Claimable. The IRS and your state legislature co-fund your gift — if the donor understands the match exists, and the nonprofit is equipped to collect it automatically. Same law. Different story. Different behavior.
Gift Aid is not magic — it is design. Thirty-four years of HMRC data show which dimensions drive adoption. MatchingGov maps each one onto instruments that exist in U.S. law and technology today.
The charity. HMRC pays 25p per £1 directly to the nonprofit. The state's incentive becomes the charity's income.
The donor assigns it. Under §170(p), the donor authorizes the nonprofit to collect the monetary value of the deduction — a written pre-commitment, legal today.
A single Gift Aid declaration covers all future gifts to that charity. No repeated choices, no annual friction.
Pre-commitment by default. One checkbox at the moment of giving authorizes the match — rooted in Thaler & Benartzi's Save More Tomorrow: people commit more generously to their future selves.
Charities file claims in bulk through HMRC's online system. Software providers handle it invisibly.
Technology does the collecting. Giving platforms trigger an ACH charge on a fixed date. The donor decides once; the software executes; the nonprofit receives full value, no intermediaries.
Declarations can be cancelled at any time. Low perceived risk is what makes 34 years of unbroken growth possible.
Revocable until collection day. One click cancels the match, no penalty, no questions. Trust is the adoption engine, not the fine print.
Gift Aid is ambient — embedded in every donation form, every charity shop, every telethon. Awareness is cultural.
A single national date. May 15 — Giving Tax Day — concentrates collection, media attention and donor emotion at the peak of tax season. What Giving Tuesday did for giving, GTD does for the match.
This is what §170(p) looks like when a donor understands it and a nonprofit is equipped to execute it. Move the sliders — the ledger is the argument.
Illustrative worksheet. Federal rate mirrors the deduction value of the gift (donor selects 15–35%; default 20%). State rates depend on each state's charitable deduction or credit regime — some states offer credits of 25% or more; others offer none. U.S. performance figures will come from the field trial, not from projections.
The law is necessary but not sufficient. Thirty-four years of Gift Aid — and everything we know from behavioral science — say the match is claimed when two conditions hold at once.
Behavioral economics is the translation layer. The donor doesn't need a tax course — they need the right frame at the right moment.
Technology is the execution layer. If claiming the match requires manual work, it won't happen — in the UK, software made Gift Aid invisible. Same here.
MatchingGov makes no U.S. performance claims — yet. The frame gets tested the way any serious claim should: with a randomized controlled trial and a coordinated national moment.
A pre-registered randomized controlled trial, developed with academic partners in behavioral science, testing whether the matching frame and pre-commitment lift total giving with real donors and real nonprofits.
Does the government-match frame increase uptake? Do second gifts crowd out first gifts? What revocation rates emerge in the field? Every claim made in 2028 will trace to data generated in 2027.
givemoretomorrow.org →The operational heartbeat of the match: one national date, at the emotional peak of tax season, when every participating nonprofit collects its donors' pre-committed government match — automatically, directly, at full value.
One date concentrates attention, simplifies operations, and gives the country a story worth retelling every year — the day America claims its match.
givingtaxday.org →Each piece of the ecosystem answers one question. MatchingGov is the frame that holds them together — the reason the mechanism, the evidence and the moment all point the same way.
The UK's proven Gift Aid model, translated to §170(p): who captures the tax value, how pre-commitment works, and the artisanal-to-systemic roadmap.
The randomized controlled trial. Pre-registered, field-run, transparently published. The data that turns a good story into a defensible claim.
May 15. The coordinated national collection day — the operational and emotional focal point that makes the match visible to the whole country.
The closing argument: §170(p) OBBBA is a federal and state matching-gift program. It compounds when donors understand it and nonprofits execute it automatically, powered by technology and behavioral economics.
Nonprofits, giving platforms, researchers and funders: the founding coalition for the first Giving Tax Day is forming now. Pilot launch Q2 2027.