Maturities · Month-end record, Monthly Statement of the Public Debt

How much US Treasury debt was maturing within a year on 31 August 2010?

On 31 August 2010, $2.59 trillion of marketable US Treasury debt was due within 12 months, 6.2% less than a year earlier ($2.76 trillion on 31 August 2009).

Marketable Treasury debt maturing each month, by kind

September 2010 to August 2011As of the month-end of 31 Aug 2010

$0.2T$0.4T$0.6T$0.8TSepOctNovDecJanFebMarAprMayJunJulAug

September 2010 Bills $614.46B Notes and bonds $50.15B Total $664.61BOctober 2010 Bills $328.01B Notes and bonds $48.51B Total $376.52BNovember 2010 Bills $250.03B Notes and bonds $54.48B Total $304.51BDecember 2010 Bills $163.01B Notes and bonds $53.78B Total $216.79BJanuary 2011 Bills $146.00B Notes and bonds $54.70B TIPS and FRNs $13.78B Total $214.47BFebruary 2011 Bills $146.00B Notes and bonds $83.08B Total $229.08BMarch 2011 Bills $26.00B Notes and bonds $59.40B Total $85.39BApril 2011 Bills $26.00B Notes and bonds $58.89B TIPS and FRNs $22.16B Total $107.05BMay 2011 Bills $26.00B Notes and bonds $58.43B Total $84.43BJune 2011 Bills $50.00B Notes and bonds $58.66B Total $108.66BJuly 2011 Bills $25.00B Notes and bonds $59.88B Total $84.88BAugust 2011 Bills $25.00B Notes and bonds $87.40B Total $112.40B

Each kind

Bills
Notes and bonds
TIPS and FRNs

Each column is one month after the month-end, in parts by kind of security; pointing at a column shows them.

The linesLatest: 31 Aug 2010

Due within 12 months$2.59T
Bills$1.83T
Notes and bonds$727.35B
TIPS and FRNs$35.94B

Inspect and compare dates

What matures within 12 months of this month-end beside the same months counted from the month-end a year earlier, 31 August 2009. Every month is in the table under "The numbers behind the chart".

Debt due within 12 months of 31 August 2010 and of 31 August 2009 ($ million)
Measure	This month-end	A year earlier
Month-end	31 August 2010	31 August 2009
Due within 12 months	2,588,807	2,760,098
Bills	1,825,518	2,068,494
Notes	727,354	645,222
Bonds	0	0
TIPS	35,936	46,382
FRNs	0	0
Securities	61	68
Bills share	70.5%	74.9%

Observed 31 Aug 2010.

That month-end

September 2010 is the largest month, with $664.61 billion.

Bills, the securities that mature within a year of issue, were 70.5% of what was due in these months.

A year earlier

At the month-end a year before, 31 August 2009, $2.76 trillion was due within the next 12 months, against $2.59 trillion at this one.

All marketable debt

Marketable Treasury debt outstanding at the month-end was $8.39 trillion, by kind:

Bills $1.83T
Notes and bonds $5.98T
TIPS and FRNs $583.64B

Bills made up 21.7% of it. Weighted by amount, it had 58.2 months to go until it matures, on average.

Each kind, in millions

Understanding the maturity calendar

Where it stands today

$2.59T was due within 12 months of the month-end of 31 Aug 2010, 70.5% of it in bills.

What does the maturity calendar show?

Treasury usually pays maturing debt with new borrowing, so the amount due is the amount Treasury rolls over into new securities.

Bills issued after the month-end are not here; the calendar filled with new bills every week.

The numbers behind the chart

How much was due in each of the 12 months after it?$ million, by kind

Marketable Treasury debt maturing each month ($ million)
Maturing in	Total	Bills	Notes	TIPS	Securities
September 2010	664,610	614,461	50,149	0	7
October 2010	376,518	328,010	48,508	0	6
November 2010	304,514	250,033	54,481	0	6
December 2010	216,793	163,015	53,777	0	7
January 2011	214,474	145,997	54,699	13,778	7
February 2011	229,084	146,002	83,082	0	7
March 2011	85,395	26,000	59,395	0	3
April 2011	107,046	25,999	58,888	22,159	4
May 2011	84,431	26,000	58,431	0	3
June 2011	108,663	50,001	58,662	0	4
July 2011	84,882	25,000	59,882	0	3
August 2011	112,398	25,000	87,398	0	4
All of these months	2,588,807	1,825,518	727,354	35,936	61

The table scrolls sideways; the first column stays in place.

What was all marketable debt made of?31 August 2010, $ million

Marketable Treasury debt outstanding at the month-end ($ million)
Kind	Amount, $ million	Share
Bills	1,825,518	21.7%
Notes	5,148,259	61.3%
Bonds	836,727	10.0%
TIPS	583,639	7.0%
Floating rate notes	0	0.0%
All marketable debt	8,394,142	100.0%

How much of it did the Federal Reserve hold?System Open Market Account, $ million

Maturing debt held in the Federal Reserve's System Open Market Account ($ million)
Maturing in	Total	Held by the Fed	Fed share
September 2010	664,610	16,468	2.5%
October 2010	376,518	2,609	0.7%
November 2010	304,514	6,100	2.0%
December 2010	216,793	5,922	2.7%
January 2011	214,474	3,673	1.7%
February 2011	229,084	7,585	3.3%
March 2011	85,395	4,933	5.8%
April 2011	107,046	9,455	8.8%
May 2011	84,431	9,259	11.0%
June 2011	108,663	3,413	3.1%
July 2011	84,882	2,948	3.5%
August 2011	112,398	5,600	5.0%

Observed 25 Aug 2010.

When are the figures from?

Observed 31 Aug 2010.

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Page updated 4 Oct 2026, 09:34 UTC

Sources

© 2026 Federal Reserve Bank of New York. Content from the New York Fed subject to the Terms of Use at newyorkfed.org. The Federal Reserve share of maturities is computed by 500metrics. (source) Terms: Federal Reserve Bank of New York terms of use.