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

How much US Treasury debt was maturing within a year on 31 December 2018?

On 31 December 2018, $4.31 trillion of marketable US Treasury debt was due within 12 months, 12.7% more than a year earlier ($3.83 trillion on 31 December 2017).

Marketable Treasury debt maturing each month, by kind

January 2019 to December 2019As of the month-end of 31 Dec 2018

$0.25T$0.5T$0.75T$1.0TJanFebMarAprMayJunJulAugSepOctNovDec

January 2019 Bills $799.98B Notes and bonds $116.19B TIPS and FRNs $60.89B Total $977.05BFebruary 2019 Bills $463.01B Notes and bonds $191.76B Total $654.77BMarch 2019 Bills $348.00B Notes and bonds $117.84B Total $465.83BApril 2019 Bills $188.00B Notes and bonds $118.50B TIPS and FRNs $98.58B Total $405.08BMay 2019 Bills $215.00B Notes and bonds $186.98B Total $401.98BJune 2019 Bills $170.02B Notes and bonds $117.46B Total $287.48BJuly 2019 Bills $26.00B Notes and bonds $118.21B TIPS and FRNs $60.50B Total $204.71BAugust 2019 Bills $26.00B Notes and bonds $202.97B Total $228.97BSeptember 2019 Bills $26.00B Notes and bonds $117.23B Total $143.24BOctober 2019 Bills $26.00B Notes and bonds $114.65B TIPS and FRNs $41.37B Total $182.02BNovember 2019 Bills $26.00B Notes and bonds $191.70B Total $217.70BDecember 2019 Bills $26.00B Notes and bonds $117.39B Total $143.39B

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 Dec 2018

Due within 12 months$4.31T
Bills$2.34T
Notes and bonds$1.71T
TIPS and FRNs$261.34B

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 December 2017. Every month is in the table under "The numbers behind the chart".

Debt due within 12 months of 31 December 2018 and of 31 December 2017 ($ million)
Measure	This month-end	A year earlier
Month-end	31 December 2018	31 December 2017
Due within 12 months	4,312,215	3,827,534
Bills	2,339,992	1,955,932
Notes	1,678,852	1,596,900
Bonds	32,031	13,892
TIPS	89,293	89,805
FRNs	172,046	171,006
Securities	99	91
Bills share	54.3%	51.1%

Observed 31 Dec 2018.

That month-end

January 2019 is the largest month, with $977.05 billion.

Bills, the securities that mature within a year of issue, were 54.3% of what was due in these months.

A year earlier

At the month-end a year before, 31 December 2017, $3.83 trillion was due within the next 12 months, against $4.31 trillion at this one.

All marketable debt

Marketable Treasury debt outstanding at the month-end was $15.61 trillion, by kind:

Bills $2.34T
Notes and bonds $11.47T
TIPS and FRNs $1.80T

Bills made up 15.0% of it. Weighted by amount, it had 69.2 months to go until it matures, on average.

Each kind, in millions

Understanding the maturity calendar

Where it stands today

$4.31T was due within 12 months of the month-end of 31 Dec 2018, 54.3% 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	Bonds	TIPS	FRNs	Securities
January 2019	977,054	799,975	116,194	0	17,361	43,525	16
February 2019	654,769	463,010	178,668	13,090	0	0	13
March 2019	465,835	347,998	117,837	0	0	0	8
April 2019	405,078	187,998	118,496	0	53,958	44,627	9
May 2019	401,980	215,001	186,979	0	0	0	10
June 2019	287,475	170,019	117,456	0	0	0	8
July 2019	204,708	25,997	118,211	0	17,974	42,526	7
August 2019	228,966	25,999	184,027	18,941	0	0	7
September 2019	143,234	26,000	117,235	0	0	0	5
October 2019	182,018	25,997	114,652	0	0	41,368	5
November 2019	217,703	25,999	191,704	0	0	0	6
December 2019	143,393	25,999	117,393	0	0	0	5
All of these months	4,312,215	2,339,992	1,678,852	32,031	89,293	172,046	99

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

What was all marketable debt made of?31 December 2018, $ million

Marketable Treasury debt outstanding at the month-end ($ million)
Kind	Amount, $ million	Share
Bills	2,339,992	15.0%
Notes	9,297,010	59.6%
Bonds	2,174,490	13.9%
TIPS	1,412,591	9.1%
Floating rate notes	383,815	2.5%
All marketable debt	15,607,898	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
January 2019	977,054	16,282	1.7%
February 2019	654,769	56,052	8.6%
March 2019	465,835	22,379	4.8%
April 2019	405,078	31,926	7.9%
May 2019	401,980	58,532	14.6%
June 2019	287,475	21,463	7.5%
July 2019	204,708	21,496	10.5%
August 2019	228,966	69,488	30.3%
September 2019	143,234	12,985	9.1%
October 2019	182,018	15,683	8.6%
November 2019	217,703	48,169	22.1%
December 2019	143,393	10,481	7.3%

Observed 26 Dec 2018.

When are the figures from?

Observed 31 Dec 2018.

500metrics is not affiliated with the New York Fed. The New York Fed does not sanction, endorse, or recommend any products or services offered by 500metrics.

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.