The Elements of an Appropriation, Part 1 — Time: How Long the Money Lives

Every dollar Congress appropriates is fenced on three sides: how long you can use it, what you can use it for, and how much there is. Time, purpose, amount. Miss any one and you've got a violation — and two of the three roads dead-end at the Antideficiency Act. This series walks the three fences. We start with the clock, because it's the one you can point to in the bill text — and because the money doesn't die when you think it does.

Everyone who's been near a federal budget office knows the September 30 scramble: use it or lose it, obligate by midnight, don't leave money on the table. It's real, and it's the forward face of a rule most people never see the back of.

Here's the part that surprises people. When an annual appropriation "expires" on September 30, the money doesn't vanish. The account goes quiet — no new commitments — but it stays open for five more years to pay the bills you already ran up and to true up the contracts you already signed. There are two clocks running on every appropriation, not one. The famous one tells you when you can commit the money. The quiet one tells you how long you get to pay it out and clean it up. This post is mostly about the quiet one, because it's where the multi-year contracts live and where a fair amount of oversight trouble hides.

The 60-Second Version

Key insight: "Expired" and "cancelled" are not the same thing, and the five years between them is where most of the interesting execution happens. An expired appropriation is still alive — it just can't take on anything new. A cancelled one is dead. Knowing which state an account is in tells you exactly what can legally be done with it.

Two Clocks, Not One

The default period of availability is one year. Silence means annual — if the bill text names a dollar amount and then just stops, that money is available for new obligations only through the end of that fiscal year. To get more time, Congress has to add words — and, as the numbers below will show, it adds them to most of the money.

There are three settings:

• One-year (annual) — no availability clause. Obligate by September 30 or lose the authority.
• Multi-year — "to remain available until September 30, 20XX." A fixed later date.
• No-year — "to remain available until expended." No obligation deadline at all.

That's the obligation clock — how long you can make new commitments. But every appropriation carries a second clock underneath it: the execution clock, which governs how long the account stays open to liquidate and adjust the obligations you already made. The execution clock is the obligation period plus five expired fiscal years, and then the account closes.

Translation: The obligation clock decides when you can sign the contract. The execution clock decides how long you get to pay the invoices and settle the final bill on a contract you already signed. They are different lengths, they answer different questions, and confusing them is the single most common source of fiscal-law errors around timing.

Bona Fide Needs — Just the Two Points

The bona fide needs rule (31 U.S.C. § 1502(a)) has a large body of case law behind it. For reading an appropriation, you need exactly two things out of it, one pointing forward and one pointing back.

1. You (usually) can't pre-fund. This year's money is for this year's needs. You can't reach forward and obligate current funds for a need that really belongs to a future period — stockpiling next year's supplies, prepaying next year's service contract. The "usually" quietly absorbs the standard carve-outs (severable services that cross the fiscal year, subscriptions, replacing stock you drew down); it's a real list, but it's not this post.

2. A real need in the window lets you true it up later — with the old money. This is the direction people miss, and it's the hinge to everything below. Because the need genuinely arose during the period of availability, that year's account stays the correct account to charge — even after it expires. So when an obligation properly made for a bona fide need of the period needs an upward adjustment — a quantity overrun, a price adjustment on that contract — the adjustment gets charged back to the expired appropriation, not to current-year money.

Key insight: The bona fide needs rule is what makes an obligation "properly chargeable" to a given year. Sections 1552 and 1553 are just the plumbing that decides how long you get to act on it. Point 1 gates what's a valid obligation. Point 2 is the reason expired accounts stay open at all.

Reading the Obligation Clock in the Bill Text

Before the execution clock, the easy part: spotting the obligation clock. It's the availability clause, and once you know the three shapes you'll never not see them. I'm using H.R.9495 - Department of Defense Appropriations Act, 2027 for examples.

Three accounts, three clocks, and the only difference is the words after the dollar figure. Operation and Maintenance stops — that's a one-year account, obligate by September 30. Shipbuilding carries a fixed later date — multi-year, because you can't buy a destroyer in twelve months. Defense Strategic Capital says "until expended" — no-year, no obligation deadline at all.

Highlight legend: gold = dollar amount · blue = fixed-date availability · purple = no-year, "until expended"

Pro Tip: The length of the obligation clock usually tracks how long the work takes. Salaries and day-to-day operations run annual. Procurement of complex hardware runs multi-year. Big construction and things with no predictable schedule run no-year. When you see a one-year clock on something that obviously takes longer than a year to build, that should make you pause for a moment. If it can be built in 5 years, it may be that Congress is keeping the pressure up on the agency to obligate the funds quickly. It could also be that the grant is actually funded in annual chunks.

Where the Money Actually Lives

The three settings aren't just a drafting convention — they're a measurable fact about the whole federal government. Take every account with budgetary resources in a year, sort it by its clock, and you can see exactly how the money distributes across time. We took a look at the SF-133s through June 30, 2026 to get the distribution.

Start with all of it — total budgetary resources, every account, every dollar available to obligate:

The first surprise is that the statutory default — single-year — is the smallest share of the dollars. Barely a fifth of federal money is annual. Seventy percent of it is no-year, money with no obligation deadline at all. The "use it or lose it" world everyone associates with federal budgeting turns out to describe less than one dollar in five.

That's because most federal money isn't the kind Congress fights over each year. It's mandatory — Social Security, Medicare, interest on the debt — and mandatory spending runs on permanent, no-year appropriations by design. Also, this view is a mix of active and expired accounts - accounts running out their execution clock. Let's consider accounts that actually received discretionary or mandatory appropriations in 2026.

Discretionary first — the money that moves through the twelve annual bills, the money a shutdown is a fight about:

Now the default reasserts itself. In the discretionary world, single-year is half the dollars, and the three buckets split the account count almost evenly. This is where the September 30 scramble is real: half the money Congress appropriates through the annual process has to be obligated by the deadline or lost. And a portion of all of those multi-year discretionary accounts are expiring this year too. The clock you learned to read is a discretionary instrument first.

Mandatory is the mirror image:

Eighty-two percent no-year, by both accounts and dollars. Entitlements don't expire, because expiration is a tool for controlling annual discretion and entitlements aren't discretionary — the money flows as long as people qualify. The clock is barely a factor here; the appropriation is effectively permanent.
Those multi-year mandatory accounts? While many were created in recent reconciliation measures, some ongoing mandatory programs receive multi-year money.

Key insight: The clock matters most exactly where the politics is. In the discretionary space — the appropriations bills, the subcommittee markups, the shutdown stakes — single-year money dominates and the deadline bites. In the mandatory space, which is the majority of every federal dollar, the money is permanent and the clock barely applies. "Use it or lose it" isn't a description of the federal budget; it's a description of the discretionary federal budget, which is the slice Congress actually writes each year.

Translation: When you hear that most of the budget is "on autopilot," this is the shape of it. The autopilot is no-year mandatory money. The part Congress steers by hand every year is smaller — and it's the part where the calendar is a live constraint.

One more thing worth noticing: multi-year is the most common account structure in the government-wide tally — 4,300 accounts, more than single-year or no-year on its own — yet it holds barely a tenth of the dollars. Seems like a contradiction, but it's not. These accounts stick around longer than the others and juke the stats on the tally.

The Execution Clock: §§ 1553 and 1552, Step by Step

Now the quiet clock. Follow an annual appropriation past September 30 and it moves through three states.

Current. The account is open for everything — new obligations and payments both. This is the year the money was appropriated for.

Expired — the five-year window (31 U.S.C. § 1553(a)). On October 1 after the obligation clock stops, the appropriation becomes expired. It keeps its fiscal-year identity and stays available to record, adjust, and liquidate obligations properly chargeable to it — but it can't take on anything new. This is exactly where a contract awarded during the obligation period keeps getting paid, gets modified within scope, and eventually gets closed out. This is the contract execution period, and it lasts five full fiscal years past expiration.

Translation: An expired account is a settled estate, not a fresh wallet. You can pay the debts the deceased year ran up and settle its accounts. You cannot go shopping with it.

Cancelled — the closeout (31 U.S.C. § 1552(a)). At the close of the fifth expired fiscal year, the account closes. The entire remaining balance — obligated and unobligated, paid or not — is cancelled, swept back to the Treasury, and is unavailable for any purpose, forever. Not expired. Gone. 31 U.S.C. § 1555 covers no-year accounts; as you'd expect they're generally available indefinitely, but if no disbursements are made for two consecutive fiscal years, and the President or agency head believe the purpose has been carried out, there is a process for these accounts to be closed.

After cancellation (31 U.S.C. § 1553(b)). So what happens when a legitimate bill for that closed account shows up in year six? It gets charged to a current appropriation available for the same purpose — but with a hard cap. The charge can't exceed the lesser of (a) the closed account's unexpended balance, or (b) one percent of the current appropriation it's being charged to.

Key insight: That one-percent rule is a real constraint you can watch. When old obligations come home to roost after cancellation, they eat into this year's money — and Congress capped how much of this year's money is allowed to be eaten. If an agency is bumping that ceiling, it's telling you something about how much unsettled business rolled off the books.

Contract changes (31 U.S.C. § 1553(c)). Because the whole mechanism is really about contracts, the law puts extra guardrails on using current money to feed a changed one. A contract change that would push cumulative current-appropriation charges under § 1553(b) over $4 million in a fiscal year requires the agency head (or a designee) to approve it in writing first. A change that would push them over $25 million can't be obligated until the agency gives the authorizing and appropriations committees written notice and 30 days to look at it.

Translation: Congress is fine with old contracts settling up out of new money for small amounts. Once the number gets real, it wants a signature — and once it gets big, it wants a letter and a month's notice. Those two thresholds are the tell that this entire regime was built to stop one specific kind of abuse.

Why It Matters

The five-year closeout isn't tidy bookkeeping for its own sake. It exists because the old system got looted.

Before 1990, expired balances didn't die on a schedule. Two years after an account expired, its obligated balances got poured together with the leftover balances of like accounts from prior years into a single merged — "M" — account. The unobligated leftovers went into a parallel merged surplus authority account. And the critical flaw: those merged accounts were available to adjust obligations with no fiscal-year limitation at all. Money voted in one year could be spent settling — or "adjusting" — obligations many years and several appropriations removed from the one Congress actually passed. When an agency needed more room in the M account, it could pull authority back out of the merged surplus pool to refill it.

By 1990 the Defense Department's M-account and merged-surplus pool held roughly $50 billion, routinely drawn on to cover contract cost growth, with oversight that inspectors general charitably described as thin. The core problem wasn't fraud in the movie sense; it was that the money had been cut loose from the year and the purpose Congress attached to it. Once a balance is untethered from its fiscal year, it's untethered from the vote that created it — and a dollar no one can trace back to a specific appropriation is a dollar outside the reach of the people who appropriated it.

Congress killed the system in the National Defense Authorization Act for Fiscal Year 1991 (enacted November 5, 1990). It cancelled merged surplus authority, phased out the M accounts, ordered the balances audited, and replaced the whole thing with the regime we live under now: a fixed five-year execution window, then hard cancellation, with the one-percent cap and the $4M/$25M contract-change tripwires bolted on precisely where the old abuse happened. That's why § 1553(c) reads the way it does. The guardrails are shaped like the thing they were built to stop.

Key insight: Watching the execution clock is a genuine oversight lane, not an accounting footnote. Activity in expired accounts, cancellations, and current-year money getting charged for old contract changes are all visible, and they all answer the same question the 1990 reform was built around: is this money still tied to the year and the purpose Congress wrote it for? Time isn't just when the money's alive. It's the leash that keeps spending attached to the decision that authorized it.

Wrapping Up

Two clocks. One says when you can commit the money; the other says how long you get to pay it out and clean it up. Both are questions of time — and time is the easiest of the three fences to see in the bill text and the easiest to trip over in execution.

If you're thinking: "Joe, this barely scratched the surface!", you're right. And to that I present: Chapter 5 of GAO's Principles of Federal Appropriations Law.

But time only tells you whether the money is alive. It says nothing about whether you're allowed to spend it on the thing in front of you. For that, you need the second fence.

What's Next

Part 2 — Purpose: What the Money's For. A dollar that's still alive on the clock can still be spent illegally, if you spend it on the wrong thing. Next we take up 31 U.S.C. § 1301(a), the "necessary expense" test, and why the words "For necessary expenses of…" are doing more work than any other phrase in the bill.