Entrance / Learn

Education wing · by Coldie

How has the US national debt grown since 1790?

The US national debt was $71 million in 1790, mostly the bill for the Revolutionary War. By the Treasury's own records it passed $1 trillion in 1981, $10 trillion in 2008 and $40 trillion on August 18, 2026. It has almost never shrunk for long. The one time the country came close to owing nothing was January 1, 1835, when the debt was $33,733, and the total has not fallen from one year-end to the next since 1957. More than 99% of today's debt was borrowed after August 15, 1971, the day the dollar's last link to gold was cut. Lately it adds a trillion dollars every few months.

This is every figure the Treasury has on record: one per year from 1790, and one for every business day since April 1993. Drag it, zoom it, or walk through the moments that bent the line.

Gold-backed vs. fiat: the line breaks in 1971

For its first 181 years the dollar was, one way or another, a claim on gold. On August 15, 1971, President Nixon closed the gold window, and from that day the dollar has been backed by nothing but the government's word. Look at where the gold line turns rust on the chart: the debt was about $398 billion then. It is roughly 101 times that now. This is the hinge the whole Filthy Fiat project turns on. A dollar is a promise, and after 1971 the promise is all there is.

The honest footnote: gold backing was never perfectly clean. The Civil War greenbacks could not be traded for gold until 1879, and from 1933 ordinary Americans could not trade dollars for gold at all; only foreign governments could, at $35 an ounce. 1971 closed that last door. What fiat currency means.

What a dollar buys in gold

The other half of the story is how much pure gold one dollar is worth. Congress first defined the dollar in gold in 1792, at 1.604 grams. From 1837 until 1933 a dollar was 1.505 grams, by law, for nearly a century. In 1934 the price of gold was raised to $35 an ounce and a dollar shrank to 0.889 grams. After 1971 no law holds it anywhere. In August 2026 gold averaged $4,411 an ounce, so a dollar bought 0.0071 grams: 0.79% of what it bought in 1934, and 0.47% of what it bought for most of the 1800s.

Put that next to the chart above and 1971 looks like a pair of scissors. The debt, counted in dollars, opens upward. The dollar, counted in gold, closes toward zero. My buried bills lost their bodies to mold. Every other dollar lost its gold to arithmetic.

Grams of pure gold, at 31.1035 grams per troy ounce. The official price ignores the Civil War greenback years (1862 to 1878), when paper dollars traded below their gold value.

What the line is made of

Two Treasury records stitched end to end. Before April 1993 the government's own history gives one figure a year, taken at the close of each fiscal year. From 1993 on, the Bureau of the Fiscal Service publishes the total every business day and calls it the Debt to the Penny. This project is built out of one-dollar bills, so here it is to the dollar: the pennies are the only part of the debt small enough to ignore. Zoom in on the daily side and the line turns jittery, because debt is not a smooth curve. It is a stack of individual bond auctions and redemptions.

The dashed line is the part owed to the outside world: investors, banks, foreign governments and the Federal Reserve. The gap between it and the total is money the government owes itself, mostly to the Social Security and other trust funds. That gap explains the one odd moment in the modern record: from 1998 to 2001 the country ran budget surpluses and the public part shrank, but the total kept climbing.

The US national debt by year

Treasury's own year-end figures, rounded to the dollar, every ten years from 1790 and every year since 2015. The date is when Treasury took the reading: January 1 in the early years, then the close of each fiscal year (around July 1 until 1976, September 30 after).

When the debt hit each trillion

The first four trillions predate the daily record, so they are dated by fiscal year. From $5 trillion on, the date is the first business day Treasury's daily total closed at or above the mark.

Why the line goes flat, then falls off a cliff

Zoom into early 2023 or the first half of 2025 and the line goes dead flat for months. That is the debt ceiling, a legal limit Congress sets on borrowing. When the total hits it, Treasury shuffles accounts to keep paying bills and stops adding debt. When Congress raises the limit, all the postponed borrowing arrives at once: $359 billion in a single day in June 2023, and $366 billion on July 7, 2025, the biggest one-day jump in the daily record.

What this has to do with a moldy dollar

Technically, the dollar in your wallet is not part of this number. A Federal Reserve Note is a liability of the Federal Reserve, not a Treasury bond. But the two are cousins: the Fed holds a large pile of Treasury debt on its books, and ever since 1971, when the dollar let go of gold, the only thing standing behind either one is the government's promise to keep its promises.

The bills in this collection are Series 2003A to 2013. Over those series years the debt went from $6.8 trillion to $16.7 trillion (look for the green band on the chart). Then the bills went underground for two years and came back half eaten. The debt, which never goes anywhere near dirt, came back bigger. If you want the slow leak in the other direction, the one your savings feel, read how much buying power the dollar has lost.

SOURCES · U.S. Treasury Fiscal Data: Debt to the Penny (daily, 1993 to today) · U.S. Treasury Fiscal Data: Historical Debt Outstanding (yearly, 1790 to today) · U.S. Census Bureau: decennial census counts and population estimates · World Bank Commodity Price Data (The Pink Sheet): monthly gold price, 1960 to today · UPDATED 2026-09-27