What public savings means and why you might calculate it

Public savings is the amount of money a government saves in a given year — the difference between what it collects in taxes and other revenue and what it spends. When you calculate public savings, you are working backward from government budget numbers to understand whether a country, state, or city is spending more than it takes in or less.

The reason to calculate it yourself rather than just reading a headline is that the numbers tell you something real about fiscal health. A government running a deficit (negative public savings) borrows money to cover the gap. A government with positive public savings has money left over. Understanding how to do this calculation helps you read budget reports without relying on someone else's interpretation.

The calculation itself is straightforward, but the numbers involved are large and the definitions matter. This guide walks you through what goes into each side of the equation and how to find the actual figures.

Key Takeaways

  • Public savings equals total government revenue minus total government spending for a specific year.
  • Revenue includes taxes, fees, and other income; spending includes all government operations, benefits, and debt interest.
  • Government budget documents and financial reports from the Treasury Department or your state auditor's office contain the raw numbers you need.
  • The same calculation works at federal, state, and local levels, though the data sources and detail available differ.
  • A negative result means the government ran a deficit and borrowed money; a positive result means it had a surplus.

The basic formula: revenue minus spending

The calculation is: Public Savings = Total Revenue − Total Spending

That is the entire formula. Everything else is figuring out what counts as revenue and what counts as spending, then finding the actual dollar amounts.

If the result is positive, the government took in more money than it spent. If the result is negative, it spent more than it took in and had to borrow the difference. The size of the number tells you how large the gap is relative to the overall budget.

What counts as government revenue

Revenue is any money flowing into the government's accounts. The largest source is usually income tax, but revenue also includes payroll taxes, sales taxes, corporate taxes, property taxes, fees (like vehicle registration or park permits), and money from selling assets or services.

When you look at a government budget document, revenue is often broken down by source. At the federal level, the Treasury Department publishes this. At the state level, your state's budget office or auditor publishes it. At the local level, your city or county finance department does.

One important note: revenue figures in budget documents are usually for a specific fiscal year, which may not match the calendar year. The federal government's fiscal year runs October 1 through September 30. Many states use the calendar year. Some cities use different dates. Always check which year the numbers cover before you compare them.

What counts as government spending

Spending includes every dollar the government pays out: salaries for employees, contracts with vendors, benefits like Social Security or unemployment insurance, infrastructure projects, interest on borrowed money, and everything else. In budget documents, spending is usually organized by department or category (defense, education, transportation, and so on).

A critical detail: interest on the national debt or state debt counts as spending. This matters because as debt grows, so does the interest payment, which crowds out money available for other purposes. If you are calculating public savings for the federal government or a state with significant debt, the interest line item can be very large.

Some budget documents separate "mandatory" spending (like Social Security, which is set by law) from "discretionary" spending (like military or education budgets, which Congress or a legislature votes on each year). For the public savings calculation, you add them all together.

Where to find the numbers

For the federal government, the Treasury Department publishes monthly and annual reports. The most straightforward source is the Monthly Treasury Statement, available at fiscal.treasury.gov. It shows receipts (revenue) and outlays (spending) for the current fiscal year and prior years. The Congressional Budget Office also publishes detailed analyses.

For state governments, your state's budget office or auditor's office publishes annual financial reports. Search "[your state] comprehensive annual financial report" or "[your state] auditor financial statements." These documents contain total revenues and total expenditures for the fiscal year.

For local governments, your city or county finance department publishes an annual report, often called a Comprehensive Annual Financial Report (CAFR) or a Popular Annual Financial Report (PAFR). The PAFR is usually shorter and written for a general audience. Both are public documents and available on the government's website or by request.

Working through a real example

Suppose you are looking at a state's annual financial report and you find: Total Revenues = $50 billion, Total Expenditures = $52 billion. The calculation is $50 billion − $52 billion = −$2 billion. The negative number means the state ran a $2 billion deficit that year — it spent $2 billion more than it took in and had to cover the gap by borrowing, drawing down reserves, or some combination.

If instead you found Total Revenues = $50 billion and Total Expenditures = $48 billion, then $50 billion − $48 billion = $2 billion in public savings (a surplus). The state took in $2 billion more than it spent.

The numbers in real budget documents are usually much larger and broken into many line items, but the principle is identical. Add up all the revenue lines, add up all the spending lines, subtract spending from revenue, and you have public savings.

Why the numbers might look different in different reports

You may find slightly different revenue or spending totals in different documents, even for the same year. This happens because different reports use different definitions or include different accounts. For example, one report might include money transferred between funds and another might not. One might count certain trust accounts and another might exclude them.

When this happens, check the footnotes and definitions in the document. They explain what is and is not included. For the most consistent comparison year to year, use the same source document each time rather than mixing sources.

If you are comparing federal numbers, the Monthly Treasury Statement and the Congressional Budget Office sometimes show slightly different totals because they use different accounting methods. Both are correct within their own framework; they are just answering slightly different questions.

Frequently Asked Questions

Is public savings the same as a budget surplus?

Yes. Public savings and budget surplus mean the same thing — the government took in more revenue than it spent. A budget deficit is negative public savings. The terms are used interchangeably in government documents.

Should I include borrowed money in the revenue total?

No. When a government borrows money (by issuing bonds), that is not revenue — it is a loan that must be repaid. Revenue is money the government actually collects through taxes and fees. Borrowed money appears as a liability on the balance sheet, not as revenue in the savings calculation.

Why do some budget documents show different numbers for the same year?

Different documents may use different accounting methods or include different accounts. A preliminary report may show different numbers than a final audited report released months later. Always check the document's date and whether it is preliminary or final, and read the footnotes to understand what is included.

Can I calculate public savings for just one department or agency?

Yes, but that would be that department's budget balance, not public savings. Public savings is always the total for the entire government (federal, state, or local). You can calculate a department's surplus or deficit the same way — its revenue minus its spending — but it is a different measure.

What if a government has a large reserve or rainy day fund?

The reserve is separate from public savings. Public savings measures what happened in a single year — revenue minus spending. A reserve is money saved from prior years. A government can have positive public savings one year and draw down its reserve the next year if spending exceeds revenue.