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

How much US Treasury debt was maturing within a year on 31 May 2009?

On 31 May 2009, $2.75 trillion of marketable US Treasury debt was due within 12 months, 59.0% more than a year earlier ($1.73 trillion on 31 May 2008), the largest amount of any month-end we hold.

Marketable Treasury debt maturing each month, by kind

June 2009 to May 2010As of the month-end of 31 May 2009

$0.2T$0.4T$0.6TJunJulAugSepOctNovDecJanFebMarAprMay

June 2009 Bills $533.33B Notes and bonds $37.03B Total $570.35BJuly 2009 Bills $493.02B Notes and bonds $36.89B Total $529.91BAugust 2009 Bills $297.02B Notes and bonds $90.40B Total $387.42BSeptember 2009 Bills $157.01B Notes and bonds $36.97B Total $193.98BOctober 2009 Bills $195.01B Notes and bonds $38.87B Total $233.88BNovember 2009 Bills $173.01B Notes and bonds $68.07B Total $241.08BDecember 2009 Bills $62.00B Notes and bonds $41.50B Total $103.50BJanuary 2010 Bills $22.00B Notes and bonds $41.92B TIPS and FRNs $14.31B Total $78.23BFebruary 2010 Bills $23.00B Notes and bonds $86.34B Total $109.34BMarch 2010 Bills $24.00B Notes and bonds $47.00B Total $71.00BApril 2010 Bills $60.00B Notes and bonds $47.75B TIPS and FRNs $31.43B Total $139.19BMay 2010 Bills $26.00B Notes and bonds $70.10B Total $96.10B

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 May 2009

Due within 12 months$2.75T
Bills$2.07T
Notes and bonds$642.84B
TIPS and FRNs$45.74B

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 May 2008. Every month is in the table under "The numbers behind the chart".

Debt due within 12 months of 31 May 2009 and of 31 May 2008 ($ million)
Measure	This month-end	A year earlier
Month-end	31 May 2009	31 May 2008
Due within 12 months	2,753,986	1,732,020
Bills	2,065,401	1,119,245
Notes	642,843	592,081
Bonds	0	0
TIPS	45,742	20,693
FRNs	0	0
Securities	67	56
Bills share	75.0%	64.6%

Observed 31 May 2009.

That month-end

June 2009 is the largest month, with $570.35 billion.

Bills, the securities that mature within a year of issue, were 75.0% of what was due in these months.

A year earlier

At the month-end a year before, 31 May 2008, $1.73 trillion was due within the next 12 months, against $2.75 trillion at this one.

All marketable debt

Marketable Treasury debt outstanding at the month-end was $6.42 trillion, by kind:

Bills $2.07T
Notes and bonds $3.82T
TIPS and FRNs $531.02B

Bills made up 32.2% of it. Weighted by amount, it had 50.1 months to go until it matures, on average.

Each kind, in millions

Understanding the maturity calendar

Where it stands today

$2.75T was due within 12 months of the month-end of 31 May 2009, 75.0% 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
June 2009	570,351	533,325	37,026	0	7
July 2009	529,915	493,022	36,893	0	7
August 2009	387,419	297,022	90,397	0	8
September 2009	193,984	157,010	36,974	0	7
October 2009	233,878	195,007	38,871	0	7
November 2009	241,078	173,009	68,069	0	7
December 2009	103,498	61,998	41,500	0	3
January 2010	78,235	22,000	41,925	14,309	4
February 2010	109,341	23,001	86,340	0	5
March 2010	71,001	24,004	46,997	0	3
April 2010	139,187	60,000	47,754	31,433	5
May 2010	96,099	26,002	70,098	0	4
All of these months	2,753,986	2,065,401	642,843	45,742	67

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

What was all marketable debt made of?31 May 2009, $ million

Marketable Treasury debt outstanding at the month-end ($ million)
Kind	Amount, $ million	Share
Bills	2,065,401	32.2%
Notes	3,188,773	49.7%
Bonds	632,499	9.9%
TIPS	531,019	8.3%
Floating rate notes	0	0.0%
All marketable debt	6,417,693	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
June 2009	570,351	19,712	3.5%
July 2009	529,915	4,115	0.8%
August 2009	387,419	14,864	3.8%
September 2009	193,984	2,132	1.1%
October 2009	233,878	3,470	1.5%
November 2009	241,078	13,614	5.6%
December 2009	103,498	3,895	3.8%
January 2010	78,235	5,157	6.6%
February 2010	109,341	11,996	11.0%
March 2010	71,001	4,867	6.9%
April 2010	139,187	7,749	5.6%
May 2010	96,099	9,253	9.6%

Observed 27 May 2009.

When are the figures from?

Observed 31 May 2009.

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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.