Fund accounting: why governments track money in silos

# Fund accounting: why governments track money in silos

A city treasurer stares at a spreadsheet showing $40 million in the bank. Payroll is due Friday, and the general fund is $2 million short. Meanwhile, the water utility fund holds $15 million and the federal grant fund holds $10 million. The treasurer cannot touch a dollar of it. Not because of a lock on the account, but because of a rule that governs almost every government and nonprofit in the world: fund accounting.

If you come from the corporate world, this feels absurd. In a company, cash is cash. In the public sector, cash has a purpose stamped on it, and moving it across that boundary can be a legal violation.

This lesson explains why.

What "fund accounting" actually means

Fund accounting is a system that separates money into distinct pools ("funds"), each with its own balance sheet, its own revenues, and its own rules about how the money can be spent.

Think of it less like one big checking account and more like a house with dozens of labeled envelopes. The "road repair" envelope cannot pay the "library salaries" envelope, even if the road envelope is stuffed and the library envelope is empty.

The core reason is accountability. A company exists to generate profit for owners, so its accounting answers one question: are we making money? A government exists to deliver services with money the public entrusted to it, often for specific purposes. Its accounting answers a different question: did we spend each dollar on what we said we would?

This is called stewardship, and it is the organizing principle of public finance.

The main types of funds

Governments in the United States follow standards set by the Governmental Accounting Standards Board (GASB), the body that writes the rulebook. Funds fall into three broad categories.

1. Governmental funds

These pay for core public services financed mostly by taxes.

• General fund: the catch-all operating account. Police, fire, general administration, and most payroll flow through here. This is the closest thing to "the city's money."
• Special revenue funds: money legally restricted to a specific purpose. A gas tax dedicated to road maintenance, or a hotel tax dedicated to tourism promotion, lives here. Restricted means restricted: spending it elsewhere is not allowed.
• Capital projects funds: money set aside to build or buy long-lived assets, like a new bridge or a fire station.
• Debt service funds: money reserved to pay principal and interest on bonds.

2. Proprietary funds

These operate like a business, charging fees for services.

• Enterprise funds: self-supporting operations that sell services to the public. A municipal water utility, a public parking garage, or a city-owned airport. Users pay fees, and those fees fund operations. Because customers pay for a specific service, that revenue generally stays inside that fund.
• Internal service funds: operations that sell services to other government departments, like a central fleet or IT shop.

3. Fiduciary funds

Money the government holds on behalf of others and does not own. Pension trust funds are the classic example. This money can never be spent on government operations.

Back to the payroll shortfall

Now the treasurer's problem makes sense.

• The $15 million in the water utility fund is an enterprise fund. Ratepayers paid it for water service. Using it for general payroll would effectively be an illegal transfer, and in many states it would trigger a finding from the auditor.
• The $10 million in the federal grant fund is restricted by the grant agreement. Spend it outside the grant's terms and the government may have to pay it back, plus risk losing future funding.

So even with $40 million in the bank, only the general fund's cash can legally cover payroll. "The budget" can look balanced in total while a single fund runs dry. This is why public finance professionals never look at a single bottom line. They look fund by fund.

Restricted versus unrestricted: the distinction that runs everything

The heart of fund accounting is one word: restriction.

• Restricted funds carry an external constraint imposed by law, a grantor, a bond covenant, or a donor. The government cannot lift that restriction on its own.
• Unrestricted funds can be spent on any legal government purpose. The general fund is largely unrestricted.

This matters enormously in nonprofits too. A donor who gives $1 million "for scholarships" has created a restricted fund. The nonprofit cannot use that gift to make rent, even if it is about to be evicted. Nonprofits report these under FASB standards as net assets with donor restrictions versus without donor restrictions. Different rulebook, same logic.

Why not just pool the cash?

A fair question. Pooling would be more efficient. Fund accounting exists precisely to prevent that efficiency, because the risk it guards against is worse than inefficiency: the temptation to raid dedicated money.

Imagine a city facing a deficit. Without restrictions, it could quietly drain the pension fund, or spend next year's bond repayment money, or divert road taxes to close the gap. Voters approved those taxes and bonds on a promise. Fund accounting turns that promise into an accounting wall.

There is a legal escape valve, but it is deliberately narrow. Governments can make an interfund transfer, moving money between funds, but only when the law or the budget authorizes it. A common legal move is an interfund loan, where one fund lends cash to another with a documented repayment plan. These are disclosed, tracked, and audited. They are not a way to make restrictions disappear.

How this shows up in the financial statements

Government financial reports, published annually as the Annual Comprehensive Financial Report (ACFR), present information in two layers.

1. Fund-level statements: the detailed, silo-by-silo view. This is where you see each fund's health.

2. Government-wide statements: a consolidated, big-picture view that looks more like corporate accounting, added by GASB to help outside readers see the total.

A skilled analyst reads both. The government-wide view tells you overall financial position. The fund view tells you whether the money that matters is actually available where it is needed. A city can be solvent overall and still unable to make payroll from the right fund.

Reading a fund like a pro

When you evaluate a government or nonprofit, ask these questions fund by fund:

• How much of total cash is unrestricted? A big balance sheet full of restricted money is not the same as flexibility.
• Is the general fund's balance growing or shrinking? Repeated draws on general fund reserves signal structural strain.
• Are enterprise funds self-supporting? If a water fund needs regular subsidies from the general fund, its fees are too low or its costs too high.
• Are interfund loans piling up? Frequent borrowing from restricted funds can hint that the general fund is stressed.

This is the difference between someone who reads "$40 million in the bank" and someone who asks "$40 million in which funds, and with what strings attached?"

Key Takeaways

• Governments track money in silos called funds, each with its own rules, because their job is stewardship of public money, not profit.
• Restricted dollars cannot be moved, even in a crisis. Water fees, grant money, and dedicated taxes stay in their lane by law.
• The general fund is the mostly unrestricted operating account, and it is usually the only source for flexible spending like general payroll.
• A balanced overall budget can hide a single fund running dry. Always analyze fund by fund, not by one bottom line.
• Interfund transfers and loans exist but are narrow, documented, and audited.