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

How much US Treasury debt was maturing within a year on 31 May 2011?

On 31 May 2011, $2.62 trillion of marketable US Treasury debt was due within 12 months, 1.6% more than a year earlier ($2.58 trillion on 31 May 2010).

Marketable Treasury debt maturing each month, by kind

June 2011 to May 2012As of the month-end of 31 May 2011

$0.2T$0.4T$0.6TJunJulAugSepOctNovDecJanFebMarAprMay

June 2011 Bills $480.45B Notes and bonds $58.66B Total $539.11BJuly 2011 Bills $265.01B Notes and bonds $59.88B Total $324.89BAugust 2011 Bills $257.02B Notes and bonds $87.40B Total $344.42BSeptember 2011 Bills $175.01B Notes and bonds $61.26B Total $236.27BOctober 2011 Bills $139.00B Notes and bonds $61.27B Total $200.27BNovember 2011 Bills $125.01B Notes and bonds $91.80B Total $216.82BDecember 2011 Bills $22.00B Notes and bonds $90.28B Total $112.28BJanuary 2012 Bills $22.00B Notes and bonds $92.13B TIPS and FRNs $7.55B Total $121.68BFebruary 2012 Bills $22.00B Notes and bonds $120.13B Total $142.12BMarch 2012 Bills $23.00B Notes and bonds $96.45B Total $119.45BApril 2012 Bills $24.00B Notes and bonds $96.95B TIPS and FRNs $19.02B Total $139.97BMay 2012 Bills $24.00B Notes and bonds $100.34B Total $124.34B

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 2011

Due within 12 months$2.62T
Bills$1.58T
Notes and bonds$1.02T
TIPS and FRNs$26.58B

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 2010. Every month is in the table under "The numbers behind the chart".

Debt due within 12 months of 31 May 2011 and of 31 May 2010 ($ million)
Measure	This month-end	A year earlier
Month-end	31 May 2011	31 May 2010
Due within 12 months	2,621,631	2,579,485
Bills	1,578,504	1,855,517
Notes	1,016,548	688,107
Bonds	0	0
TIPS	26,579	35,861
FRNs	0	0
Securities	67	60
Bills share	60.2%	71.9%

Observed 31 May 2011.

That month-end

June 2011 is the largest month, with $539.11 billion.

Bills, the securities that mature within a year of issue, were 60.2% of what was due in these months.

A year earlier

At the month-end a year before, 31 May 2010, $2.58 trillion was due within the next 12 months, against $2.62 trillion at this one.

All marketable debt

Marketable Treasury debt outstanding at the month-end was $9.25 trillion, by kind:

Bills $1.58T
Notes and bonds $7.02T
TIPS and FRNs $653.82B

Bills made up 17.1% of it. Weighted by amount, it had 61.4 months to go until it matures, on average.

Each kind, in millions

Understanding the maturity calendar

Where it stands today

$2.62T was due within 12 months of the month-end of 31 May 2011, 60.2% 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 2011	539,114	480,452	58,662	0	7
July 2011	324,891	265,008	59,882	0	6
August 2011	344,418	257,020	87,398	0	7
September 2011	236,272	175,010	61,262	0	7
October 2011	200,270	139,004	61,266	0	6
November 2011	216,816	125,015	91,801	0	7
December 2011	112,281	22,000	90,281	0	4
January 2012	121,684	22,000	92,130	7,554	5
February 2012	142,124	21,996	120,128	0	5
March 2012	119,447	23,000	96,447	0	4
April 2012	139,971	24,000	96,946	19,025	5
May 2012	124,344	23,999	100,345	0	4
All of these months	2,621,631	1,578,504	1,016,548	26,579	67

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

What was all marketable debt made of?31 May 2011, $ million

Marketable Treasury debt outstanding at the month-end ($ million)
Kind	Amount, $ million	Share
Bills	1,578,504	17.1%
Notes	6,054,699	65.4%
Bonds	964,890	10.4%
TIPS	653,818	7.1%
Floating rate notes	0	0.0%
All marketable debt	9,251,912	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 2011	539,114	19,417	3.6%
July 2011	324,891	2,948	0.9%
August 2011	344,418	5,600	1.6%
September 2011	236,272	3,425	1.4%
October 2011	200,270	4,030	2.0%
November 2011	216,816	10,493	4.8%
December 2011	112,281	5,621	5.0%
January 2012	121,684	7,553	6.2%
February 2012	142,124	14,491	10.2%
March 2012	119,447	14,212	11.9%
April 2012	139,971	17,976	12.8%
May 2012	124,344	14,188	11.4%

Observed 25 May 2011.

When are the figures from?

Observed 31 May 2011.

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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.