In accounting, an encumbered amount is money that has been formally set aside for a specific future expense but has not yet been spent. The moment a purchase order is approved or a contract is signed, that portion of the budget is placed on hold: the cash still sits in the account, but the accounting system treats it as spoken for and blocks anyone from redirecting it. Encumbrance accounting is used almost exclusively by government agencies and nonprofit organizations, where legislatures or boards authorize fixed spending amounts and going over those amounts can carry legal consequences.
What Triggers an Encumbrance
The most common trigger is the approval of a purchase order. When a department finalizes a purchase order for, say, $50,000 in software licensing, the accounting system immediately blocks that $50,000 from the department’s available balance. The money hasn’t left the account yet, but no one can spend it on another project. Signed service contracts, construction bids, and other formal procurement commitments create the same kind of hold.
Before the purchase order exists, many organizations create what’s called a pre-encumbrance. A pre-encumbrance is tied to a requisition, which is a formal request to buy something. It signals intent to spend but doesn’t carry the legal weight of a purchase order. Pre-encumbrances are planning tools that give budget managers an early warning that funds will likely be committed soon. Once the requisition is approved and converted into a purchase order, the pre-encumbrance becomes a true encumbrance.
How Encumbrances Change Your Available Balance
Encumbrances create a number budget managers watch closely: the unencumbered balance. This is the money actually available for new spending after accounting for everything already paid and everything reserved for future payment. The math is straightforward:
Total appropriation − expenditures − encumbrances = unencumbered balance
Consider a department that starts the year with a $1,000,000 appropriation, spends $400,000, and has $200,000 encumbered on open purchase orders. The unencumbered balance is $400,000. A manager who only looked at the bank balance would see $600,000 and might think there’s room for a large new purchase. The encumbrance system prevents that mistake by showing the true spending power in real time.
This kind of transparency isn’t optional for organizations handling federal funds. Under the Uniform Guidance, recipients of federal awards must maintain financial management systems capable of tracking obligations and unobligated balances.1eCFR. 2 CFR 200.302 Financial Management Encumbrance accounting is one of the primary ways they meet that requirement.
How an Encumbrance Gets Resolved
An encumbrance doesn’t live forever. It resolves through a process called liquidation, and that can happen in a few different ways.
The most straightforward path is delivery and payment. A vendor delivers the goods, submits an invoice, and the organization pays. At that point, the encumbrance disappears from the ledger and the amount becomes a recorded expenditure. The budget impact doesn’t change because the money was already set aside, but its accounting classification shifts from reserved to spent.
Partial deliveries are common, and the accounting tracks them. If a vendor delivers half of a $20,000 order, the encumbrance drops by $10,000 when that invoice is paid, and the remaining $10,000 stays encumbered until the rest arrives. Budget managers can see at a glance how much of each purchase order has been fulfilled and how much is still outstanding.
If a project gets canceled or a purchase order is voided entirely, the encumbrance is released and the funds return to the unencumbered pool. Finance officers watch these releases carefully near the end of a fiscal year because released funds represent spending authority that might otherwise go unused.
What Happens to Open Encumbrances at Year-End
Fiscal year-end is where encumbrances get complicated. When a purchase order is still open on the last day of the fiscal year, the organization has to decide whether those reserved funds carry forward into the next year or lapse back into the general fund. The answer depends on the type of appropriation.
Multi-year appropriations generally allow encumbered funds to carry forward without additional authorization. The budget authority follows the purchase order into the new fiscal year, but it can only be used for the original purpose. If the actual cost comes in lower than the encumbered amount, the leftover budget authority typically must be returned rather than repurposed.
Single-year appropriations are stricter. Unspent and unencumbered funds usually lapse at year-end. Whether outstanding encumbrances survive depends on the specific rules of the jurisdiction. Some allow encumbrances to carry forward as long as the underlying commitment is legitimate and documented. Others require blanket orders and purchase orders with no recent activity to be closed out, with any remaining balance reverting to the general fund.
This creates a predictable year-end pattern: a rush to finalize legitimate purchase orders before the deadline, followed by careful review of which encumbrances qualify for carryover. Auditors scrutinize this process because encumbrances created solely to avoid losing budget authority are a well-known form of fiscal manipulation.
Where Private Businesses Fit In
Most private-sector companies never use encumbrance accounting. They compare planned spending to actual spending and rely on accrual accounting to record expenses when they’re incurred. The system exists for entities operating under fixed appropriations, where a legislature or board authorizes a specific dollar amount for a specific purpose and spending beyond that amount can trigger legal consequences. If you work in a typical for-profit business, you’re unlikely to encounter the term outside of dealings with a government customer or grantor.
Consequences of Over-Encumbering a Budget
Encumbering more money than an appropriation allows isn’t just a bookkeeping error. At the federal level, the Antideficiency Act makes it illegal for any officer or employee to obligate funds exceeding the amount available in their appropriation.2Office of the Law Revision Counsel. 31 USC 1341 Limitations on Expending and Obligating Amounts Violations can result in administrative discipline up to and including removal from office, and anyone who does it knowingly and willfully faces fines up to $5,000, up to two years in prison, or both.3Office of the Law Revision Counsel. 31 USC Subtitle II, Chapter 13, Subchapter III
Organizations receiving federal grants face a separate layer of risk. The Uniform Guidance allows federal agencies to withhold payments, disallow costs, or suspend and terminate awards when recipients fail to comply with financial management requirements.4eCFR. 2 CFR Part 200 Subpart D Post Federal Award Requirements Poor encumbrance tracking can lead to an audit finding that the organization lacked adequate financial controls, which in turn can trigger suspension or debarment from future federal funding. For agencies and nonprofits that depend on grants, this is an existential threat.
State and local governments have their own statutory prohibitions on over-obligating budgets, with penalties ranging from fines to termination. The specifics vary by jurisdiction, but the principle is the same everywhere: spending authority has a ceiling, and the encumbrance system exists to keep everyone under it.
How Encumbrances Show Up on Financial Statements
If you’re reading a government’s balance sheet, you won’t find a line item called “reserved for encumbrances.” That terminology was retired when GASB Statement No. 54 took effect. Encumbered amounts are now folded into the committed or assigned fund balance categories, depending on the authority behind the commitment.5Governmental Accounting Standards Board. Summary – Statement No. 54 Committed fund balance reflects decisions made by a government’s highest decision-making authority, such as a city council resolution. Assigned fund balance covers amounts intended for a specific purpose but set aside by someone with less formal authority, like a department head.
Significant outstanding encumbrances must also be disclosed in the notes to the financial statements, broken out by major fund.6Governmental Accounting Standards Board. Statement No. 54 Fund Balance Reporting and Governmental Fund Type Definitions Those disclosures give readers of the Annual Comprehensive Financial Report a clear picture of how much money is technically in the fund but already spoken for, and auditors use them to verify that the government has enough liquidity to cover its outstanding commitments.
One additional wrinkle: encumbrances are treated differently depending on the basis of accounting. On the budgetary basis, many governments count encumbrances as expenditures in the year the purchase order is issued, because the budget authority has been consumed. Under GAAP, those same encumbrances are not expenditures until the goods or services are received. Reconciling the two perspectives is a standard part of financial reporting, and the differences appear in the supplementary schedules that accompany the financial statements.