How to Read a Federal Budget With a Kitchen-Table Worksheet

Nobody ever lost an argument at the kitchen table by saying "show me the numbers." Washington knows this, which is why it prefers to talk in trillions, in baselines, in ten-year windows and in acronyms, anything except a figure that a person could write on the back of an envelope and understand. A number so big it has no smell, no weight and no face is a number that nobody has to defend.

So let's take the budget back to the kitchen table. I am going to give you a worksheet with seven lines. You can fill it in for your own family in about ten minutes, and then you can fill in the federal version with real figures from the people who publish them. Once you have done both, you will read every budget story in the newspaper differently, and you will know which questions to ask when someone tells you a program is "fully paid for."

I will not quote a single current federal figure in this post. The numbers change every month, and a blog post goes stale. What does not change is the structure, and the structure is what most people have never been taught.

The seven lines of the worksheet

Here is the worksheet in plain words. Each line has a household name, a federal name, and a one-sentence definition.

Look at that table for a moment. Notice that the federal government is not doing anything exotic. It takes in money, it commits to spending, it decides some spending annually, it pays interest on past borrowing, and it borrows the difference. The whole difficulty of the federal budget is size and the slow pace of the news, not complexity of kind.

Defining the terms before we touch a number

Let me define each term as the government uses it, so you do not get tripped up by the jargon.

Fiscal year. The federal fiscal year runs from October 1 to September 30. When you hear "fiscal 2027," that means the twelve months that begin October 1, 2026. This is why budget fights fall in the fall, and it is why shutdown deadlines land on September 30. If you want the full story of what a lapse in funding does and does not do, see what a government shutdown really shuts down and who gets paid.

Revenue. The money collected. The largest sources are individual income taxes and payroll taxes, followed by corporate income taxes and a mix of smaller items such as excise taxes and customs duties.

Mandatory spending. Spending that is governed by eligibility rules in law rather than by a yearly dollar amount. If you meet the rules for Social Security or Medicare, you receive the benefit without Congress voting on it again that year. Congress can change the rules, but it has to pass a new law to do so. The word "mandatory" is a little misleading, since all of it can be altered by a majority and the president's signature, but it explains why these programs grow without anyone casting a vote.

Discretionary spending. The part Congress sets each year in appropriations bills: the military, most agency operating budgets, parts of transportation and education, and many other things. This is the part that gets the shutdown headlines. It is also, in most years, the smaller piece of the total. You can check the split in the Congressional Budget Office's published budget tables.

Net interest. What the government pays on its outstanding borrowing, less what it earns on its own accounts. It is spending, and it counts in the deficit.

Deficit. The amount by which outlays exceed revenue in a year.

Debt. The running total. Two versions matter. Debt held by the public is what the Treasury owes to outside investors, including banks, pension funds, foreign holders and individuals. Gross debt adds the amounts the Treasury owes to other parts of the government itself, such as the trust funds. Newspapers use both. Always ask which one is meant.

For the longer version of how those pieces move through Congress, read How a budget becomes law, from the President's request to the checks.

The worked example

Now let's run the worksheet on a hypothetical family. This is an invented household, built to make the arithmetic easy to follow. It is not a description of any real family or of the federal government.

Meet the Parkers, a pretend family in Ohio. Their numbers for one year:

• Line 1, money coming in: $64,000.
• Line 2, locked-in bills: $38,000. These are things they promised to pay under earlier agreements: the mortgage, a car loan, insurance premiums and a monthly payment toward a parent's care. They continue without a new decision.
• Line 3, bills decided this year: $30,000. Groceries, utilities, gas, school costs, repairs, and the family trip they debate every spring.
• Line 4, interest on debt: The Parkers owe $60,000 in credit cards and other borrowing at 5 percent. So $60,000 times 0.05 equals $3,000.

Now do the sums, one line at a time.

Line 5, total spending. $38,000 plus $30,000 plus $3,000 equals $71,000.

Line 6, the deficit. $71,000 minus $64,000 equals $7,000. The Parkers spent $7,000 more than they brought in.

Line 7, the debt at year end. $60,000 plus $7,000 equals $67,000.

That is the entire worksheet. Now let me show you what a good analyst does with the result, because the final numbers are only the starting point.

Four ratios worth computing

1. Deficit as a share of income. $7,000 divided by $64,000 is 0.109375, or about 10.9 percent. The Parkers overspent by roughly a tenth of their income.
2. Debt compared with income. Before the year: $60,000 divided by $64,000 is 0.9375, or about 94 percent. After the year: $67,000 divided by $64,000 is 1.046875, or about 104.7 percent. The family went from owing a little less than a year's income to owing slightly more than a year's income. Economists use the same idea when they compare the national debt to the size of the economy.
3. Interest as a share of spending. $3,000 divided by $71,000 is about 0.0423, or 4.2 percent.
4. The balance before interest. Revenue minus everything except interest is $64,000 minus $68,000, which is a shortfall of $4,000. Analysts call this the primary deficit. It tells you whether the family would still be borrowing if the old debt did not exist. Here it would be. The family's problem is not just its history. It is this year's choices.

Run it forward one more year

A budget is a story with a sequel, so run the worksheet a second time with nothing changed except the debt.

• Debt at the start of the year is now $67,000. At 5 percent, interest is $67,000 times 0.05, which is $3,350.
• Total spending is $38,000 plus $30,000 plus $3,350, which equals $71,350.
• Revenue is still $64,000, so the deficit is $71,350 minus $64,000, which is $7,350.
• Debt at year end is $67,000 plus $7,350, which is $74,350.

Notice what happened. The Parkers did not change a single habit. Their interest bill rose by $350, their deficit rose by $350, and their debt grew. That is how compounding works on borrowed money. The longer the gap persists, the more of tomorrow's budget goes to paying for yesterday's.

Three levers, and what each one costs

Now ask the question every family has to ask: how do we close the $7,000 gap? There are only three levers, and the federal government has the same three.

Lever one: bring in more. To close a $7,000 gap with income alone, the Parkers need $7,000 more on a base of $64,000. That is $7,000 divided by $64,000, which is 10.9 percent more. A raise like that is not realistic in one year for most households.

Lever two: cut the spending decided each year. The Parkers could take $7,000 out of line 3. But $7,000 divided by $30,000 is 0.2333, or about 23 percent. They would have to cut nearly a quarter of everything they decide on each year, because the locked-in bills are not on the table. The federal version of this is a point I want you to remember: when someone proposes balancing the budget "by cutting waste," ask what fraction of the whole budget is in the part that gets voted on each year, and how large a cut that implies. The arithmetic often explains why the promise is never kept.

Lever three: change the locked-in bills. The Parkers could renegotiate the loan or find a cheaper insurance plan. In federal terms, this means changing the eligibility rules for mandatory programs. It is the hardest lever politically, and any plan that does not touch it usually pushes the whole weight onto the other two.

There is also a fourth force, and it is the one conservatives talk about most: growth. Suppose the Parkers' income grows by 3 percent. $64,000 times 0.03 is $1,920, so income becomes $65,920. In year two, with spending of $71,350 and income of $65,920, the deficit is $71,350 minus $65,920, which is $5,430. Growth shrank the gap by $1,920, which is real help but still leaves a deficit. Growth is a partner of discipline. It is not a substitute for it. For the argument over what growth can and cannot do, see Seven myths about Reagan's economy that both sides still repeat.

One more sensitivity test, since it is the one that surprises people. Suppose the interest rate on the Parkers' $67,000 went from 5 percent to 7 percent. At 5 percent, interest is $3,350. At 7 percent, it is $67,000 times 0.07, which is $4,690. The difference is $4,690 minus $3,350, which is $1,340. The government borrows by selling bills, notes and bonds, and it has to refinance them as they mature, so a rise in interest rates feeds through to its budget in the same way.

Now fill in the federal version

Here is where the real figures live. Use the primary sources. A news story may be right, but a primary source cannot be misquoted to you.

1. Congressional Budget Office (cbo.gov). Look for the Budget and Economic Outlook, which lays out the baseline for revenue, spending, deficits and debt, and the Monthly Budget Review, which tracks the current year. CBO is nonpartisan and publishes its assumptions.
2. U.S. Treasury (fiscaldata.treasury.gov). The Monthly Treasury Statement shows what was collected and spent. The Debt to the Penny page reports the debt on a daily basis and separates debt held by the public from intragovernmental holdings.
3. Office of Management and Budget. Its Historical Tables list receipts, outlays and deficits for every year, so you can see the story over decades, adjusted for the size of the economy.
4. Congress.gov. Search for the appropriations bills for the fiscal year. This is where the discretionary line is actually written, bill by bill.

Copy the figures onto your worksheet. Then do the four ratios. If a politician says a proposal is "fully paid for," run it through the worksheet and ask which line moved.

Three traps to watch for

• The baseline trick. In Washington, a "cut" often means a smaller increase than what was projected. Ask whether spending falls compared with last year, or only compared with a forecast. The Parkers would call it a cut if they planned to spend $32,000 on line 3 and spent $31,000 instead, even though $31,000 is more than the $30,000 they spent last year.
• The ten-year window. A proposal that looks affordable in year one may grow in year nine. Ask for the cost in the first year and the last.
• The unit confusion. Millions, billions and trillions are a thousand times apart each. A "billion" sounds like a lot to a family and is small against a federal budget. Convert to a ratio before you react.

If you are interested in the same method applied closer to home, our companion piece A Worksheet for Reading Your School District's Budget Line by Line works through a district budget in the same way, and Ten Questions to Ask Before You Support Any New Government Program gives you questions to ask before you cheer for any new program. The moral case that sits behind all of this is in A Balanced Budget Is a Moral Argument Before It Is an Accounting One.

The bottom line

• A budget is income, locked-in promises, annual choices and interest. Fill in the seven-line worksheet for your own home first. Habit makes the federal version easy to read.
• Always compute ratios, not just totals. Deficit compared with revenue, debt compared with the economy, and interest compared with total spending tell you more than a big headline number.
• Before you accept a "cut," ask against what baseline. Before you accept "fully paid for," ask which line moved.
• Take the real figures from the CBO, the Treasury and Congress.gov, and print what you find. Then write to your members of Congress and ask what share of the budget their proposal touches.
• Teach the worksheet to someone under twenty-five. They are the ones who will be repaying what the budget borrows.