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

How much US Treasury debt was maturing within a year on 31 March 2006?

On 31 March 2006, $1.68 trillion of marketable US Treasury debt was due within 12 months, 6.1% more than a year earlier ($1.58 trillion on 31 March 2005), the largest amount of any month-end we hold.

Marketable Treasury debt maturing each month, by kind

April 2006 to March 2007As of the month-end of 31 Mar 2006

$0.1T$0.2T$0.3T$0.4TAprMayJunJulAugSepOctNovDecJanFebMar

April 2006 Bills $285.86B Notes and bonds $34.34B Total $320.19BMay 2006 Bills $202.86B Notes and bonds $97.51B Total $300.37BJune 2006 Bills $244.95B Notes and bonds $32.59B Total $277.54BJuly 2006 Bills $90.62B Notes and bonds $53.75B Total $144.37BAugust 2006 Bills $121.89B Notes and bonds $59.72B Total $181.61BSeptember 2006 Bills $95.88B Notes and bonds $31.66B Total $127.54BOctober 2006 Notes and bonds $52.03B Total $52.03BNovember 2006 Notes and bonds $91.97B Total $91.97BDecember 2006 Notes and bonds $31.95B Total $31.95BJanuary 2007 Notes and bonds $29.03B TIPS and FRNs $19.72B Total $48.74BFebruary 2007 Notes and bonds $70.58B Total $70.58BMarch 2007 Notes and bonds $32.00B Total $32.00B

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 Mar 2006

Due within 12 months$1.68T
Bills$1.04T
Notes and bonds$617.12B
TIPS and FRNs$19.72B

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 March 2005. Every month is in the table under "The numbers behind the chart".

Debt due within 12 months of 31 March 2006 and of 31 March 2005 ($ million)
Measure	This month-end	A year earlier
Month-end	31 March 2006	31 March 2005
Due within 12 months	1,678,888	1,583,066
Bills	1,042,050	1,059,101
Notes	617,120	505,679
Bonds	0	18,286
TIPS	19,718	0
FRNs	0	0
Securities	49	47
Bills share	62.1%	66.9%

Observed 31 Mar 2006.

That month-end

April 2006 is the largest month, with $320.19 billion.

Bills, the securities that mature within a year of issue, were 62.1% of what was due in these months.

A year earlier

At the month-end a year before, 31 March 2005, $1.58 trillion was due within the next 12 months, against $1.68 trillion at this one.

All marketable debt

Marketable Treasury debt outstanding at the month-end was $4.33 trillion, by kind:

Bills $1.04T
Notes and bonds $2.94T
TIPS and FRNs $347.90B

Bills made up 24.1% of it. Weighted by amount, it had 53.6 months to go until it matures, on average.

Each kind, in millions

Understanding the maturity calendar

Where it stands today

$1.68T was due within 12 months of the month-end of 31 Mar 2006, 62.1% 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
April 2006	320,193	285,858	34,335	0	5
May 2006	300,372	202,859	97,513	0	8
June 2006	277,535	244,947	32,588	0	6
July 2006	144,367	90,616	53,751	0	6
August 2006	181,610	121,887	59,723	0	7
September 2006	127,539	95,883	31,656	0	5
October 2006	52,028	0	52,028	0	2
November 2006	91,965	0	91,965	0	3
December 2006	31,952	0	31,952	0	1
January 2007	48,745	0	29,027	19,718	2
February 2007	70,580	0	70,580	0	3
March 2007	32,001	0	32,001	0	1
All of these months	1,678,888	1,042,050	617,120	19,718	49

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

What was all marketable debt made of?31 March 2006, $ million

Marketable Treasury debt outstanding at the month-end ($ million)
Kind	Amount, $ million	Share
Bills	1,042,050	24.1%
Notes	2,409,700	55.7%
Bonds	526,647	12.2%
TIPS	347,899	8.0%
Floating rate notes	0	0.0%
All marketable debt	4,326,296	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
April 2006	320,193	70,211	21.9%
May 2006	300,372	74,123	24.7%
June 2006	277,535	67,817	24.4%
July 2006	144,367	39,605	27.4%
August 2006	181,610	48,003	26.4%
September 2006	127,539	29,351	23.0%
October 2006	52,028	12,247	23.5%
November 2006	91,965	15,776	17.2%
December 2006	31,952	7,948	24.9%
January 2007	48,745	7,858	16.1%
February 2007	70,580	11,858	16.8%
March 2007	32,001	8,000	25.0%

Observed 29 Mar 2006.

When are the figures from?

Observed 31 Mar 2006.

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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.