Table Data - Deflation Probability

Title Deflation Probability
Series ID STLPPMDEF
Source Federal Reserve Bank of St. Louis
Release St. Louis Fed Price Pressures Measures (Not a Press Release)
Seasonal Adjustment Not Seasonally Adjusted
Frequency Monthly
Units Probability
Date Range 1990-01-01 to 2026-06-01
Last Updated 2026-06-26 12:07 PM CDT
Notes This series measures the probability that the personal consumption expenditures price index (PCEPI) inflation rate (12-month changes) over the next 12 months will fall below zero.

For additional information on the Price Pressures Measure and its construction, see Introducing the St. Louis Fed Price Pressures Measure.

As of April 5, 2023, the MZM Money Stock measure, in SA billions of dollars, has been replaced with the series Revolving Consumer Credit Outstanding (break-adjusted), in SA billions of dollars, from the Federal Reserve’s monthly G.19 release. This change was made because the MZM series was discontinued.

As of February 3, 2020, the Emerging and Developing Asia and Western Hemisphere Consumer Prices Indexes have been replaced with Asia/Pacific Rim and Latin America Consumer Price Indexes respectively. These changes were made to facilitate a more timely updating of the PPM. Switching the Consumer Prices Indexes produced no meaningful change in the PPM series.

As of January 29, 2021, the Adjusted Monetary Base (including Deposits to Satisfy Clearing Balance Contracts) Seasonally Adjusted, in billions of dollars has been replaced with the series, Monetary Base, NSA, in billions of dollars.

As of June 26, 2026:

- The KR-CRB Spot Commodity Price Index for All Commodities has been replaced with the S&P Goldman Sachs Spot Index.
- The KR-CRB Spot Commodity Price Index for Metals has been replaced with the S&P Goldman Sachs Industrial Metals Index.
- The KR-CRB Spot Commodity Price Index for Textiles and Fibers has been replaced with the FIBER Industrial Materials Index for Textiles.
- The KR-CRB Spot Commodity Price Index for Raw Industrials has been replaced with the S&P Goldman Sachs Precious Metals Nearby Index.
- The KR-CRB Spot Commodity Price Index for Foodstuffs has been replaced with the S&P Goldman Sachs Agricultural Commodities Nearby Index.
- The KR-CRB Spot Commodity Price Index for Fats and Oils has been removed.
- The KR-CRB Spot Commodity Price Index for Livestock and Products has been replaced with the S&P Goldman Sachs Livestock Nearby Index.

These changes were made because the KR-CRB series was discontinued.
DATE VALUE
1990-01-01 0.08124343
1990-02-01 0.03507177
1990-03-01 0.08506680
1990-04-01 0.06374105
1990-05-01 0.13246265
1990-06-01 0.12128823
1990-07-01 0.08673759
1990-08-01 0.12744248
1990-09-01 0.22353467
1990-10-01 0.03875846
1990-11-01 0.07791625
1990-12-01 0.10098872
1991-01-01 0.06395469
1991-02-01 0.04570203
1991-03-01 0.04920625
1991-04-01 0.08924633
1991-05-01 0.09811686
1991-06-01 0.08822601
1991-07-01 0.07276715
1991-08-01 0.09460968
1991-09-01 0.12521161
1991-10-01 0.10037195
1991-11-01 0.10811708
1991-12-01 0.11499022
1992-01-01 0.15958935
1992-02-01 0.11827700
1992-03-01 0.12119608
1992-04-01 0.09100100
1992-05-01 0.09753656
1992-06-01 0.11065661
1992-07-01 0.10076663
1992-08-01 0.13448181
1992-09-01 0.13441719
1992-10-01 0.13110697
1992-11-01 0.10294385
1992-12-01 0.10178673
1993-01-01 0.08458469
1993-02-01 0.06717750
1993-03-01 0.09964839
1993-04-01 0.08457257
1993-05-01 0.08492165
1993-06-01 0.05242877
1993-07-01 0.07543981
1993-08-01 0.07090781
1993-09-01 0.08948498
1993-10-01 0.08833132
1993-11-01 0.09392757
1993-12-01 0.04887067
1994-01-01 0.05629295
1994-02-01 0.05618696
1994-03-01 0.02219164
1994-04-01 0.02366744
1994-05-01 0.02636888
1994-06-01 0.03151047
1994-07-01 0.04382681
1994-08-01 0.03072254
1994-09-01 0.01974430
1994-10-01 0.02786975
1994-11-01 0.03118501
1994-12-01 0.01491683
1995-01-01 0.00182823
1995-02-01 0.00062768
1995-03-01 0.00420335
1995-04-01 0.00116999
1995-05-01 0.00134058
1995-06-01 0.00258650
1995-07-01 0.00198053
1995-08-01 0.00274577
1995-09-01 0.00284465
1995-10-01 0.00930396
1995-11-01 0.00256326
1995-12-01 0.01013930
1996-01-01 0.00130975
1996-02-01 0.00023640
1996-03-01 0.00049093
1996-04-01 0.00009126
1996-05-01 0.00005558
1996-06-01 0.00003733
1996-07-01 0.00022991
1996-08-01 0.00002324
1996-09-01 0.00018766
1996-10-01 0.00005865
1996-11-01 0.00009776
1996-12-01 0.00007200
1997-01-01 0.00000055
1997-02-01 0.00000004
1997-03-01 0.00000020
1997-04-01 0.00000283
1997-05-01 0.00000644
1997-06-01 0.00004299
1997-07-01 0.00000231
1997-08-01 0.00001024
1997-09-01 0.00003474
1997-10-01 0.00001618
1997-11-01 0.00004308
1997-12-01 0.00017546
1998-01-01 0.00102244
1998-02-01 0.00220947
1998-03-01 0.01263157
1998-04-01 0.00800430
1998-05-01 0.00159835
1998-06-01 0.00366779
1998-07-01 0.03854167
1998-08-01 0.00246104
1998-09-01 0.00206597
1998-10-01 0.04413327
1998-11-01 0.01728333
1998-12-01 0.00710372
1999-01-01 0.04420696
1999-02-01 0.00304691
1999-03-01 0.01353341
1999-04-01 0.00242195
1999-05-01 0.00000483
1999-06-01 0.00066830
1999-07-01 0.00085106
1999-08-01 0.00005158
1999-09-01 0.00003285
1999-10-01 0.00000266
1999-11-01 0.00004336
1999-12-01 0.00001317
2000-01-01 0.00000517
2000-02-01 0.00000012
2000-03-01 0.00000023
2000-04-01 0.00000000
2000-05-01 0.00000532
2000-06-01 0.00000001
2000-07-01 0.00000002
2000-08-01 0.00000013
2000-09-01 0.00000017
2000-10-01 0.00000001
2000-11-01 0.00000008
2000-12-01 0.00000004
2001-01-01 0.00000324
2001-02-01 0.00000023
2001-03-01 0.00000026
2001-04-01 0.00001163
2001-05-01 0.00000010
2001-06-01 0.00000001
2001-07-01 0.00000012
2001-08-01 0.00001602
2001-09-01 0.00000481
2001-10-01 0.00077192
2001-11-01 0.00359624
2001-12-01 0.00047345
2002-01-01 0.00304962
2002-02-01 0.00676870
2002-03-01 0.00316161
2002-04-01 0.00006551
2002-05-01 0.00009440
2002-06-01 0.00052053
2002-07-01 0.00071768
2002-08-01 0.00016250
2002-09-01 0.00066118
2002-10-01 0.00025740
2002-11-01 0.00006862
2002-12-01 0.00008185
2003-01-01 0.00043434
2003-02-01 0.00012920
2003-03-01 0.00049606
2003-04-01 0.00177938
2003-05-01 0.06410803
2003-06-01 0.01945472
2003-07-01 0.00490792
2003-08-01 0.00005370
2003-09-01 0.00004019
2003-10-01 0.00030075
2003-11-01 0.00025973
2003-12-01 0.00060168
2004-01-01 0.00002383
2004-02-01 0.00001202
2004-03-01 0.00002608
2004-04-01 0.00002338
2004-05-01 0.00000183
2004-06-01 0.00000164
2004-07-01 0.00000213
2004-08-01 0.00002560
2004-09-01 0.00005682
2004-10-01 0.00000840
2004-11-01 0.00000023
2004-12-01 0.00000016
2005-01-01 0.00000184
2005-02-01 0.00000114
2005-03-01 0.00000016
2005-04-01 0.00000000
2005-05-01 0.00000031
2005-06-01 0.00001692
2005-07-01 0.00001922
2005-08-01 0.00000004
2005-09-01 0.00000013
2005-10-01 0.00000000
2005-11-01 0.00000000
2005-12-01 0.00003397
2006-01-01 0.00000271
2006-02-01 0.00000000
2006-03-01 0.00000014
2006-04-01 0.00000184
2006-05-01 0.00000006
2006-06-01 0.00000001
2006-07-01 0.00000180
2006-08-01 0.00000136
2006-09-01 0.00000205
2006-10-01 0.00270565
2006-11-01 0.00280935
2006-12-01 0.00008401
2007-01-01 0.00010461
2007-02-01 0.00009221
2007-03-01 0.00000024
2007-04-01 0.00000056
2007-05-01 0.00001211
2007-06-01 0.00013895
2007-07-01 0.00021940
2007-08-01 0.00054663
2007-09-01 0.01173788
2007-10-01 0.00017653
2007-11-01 0.00004365
2007-12-01 0.00000565
2008-01-01 0.00014504
2008-02-01 0.00026278
2008-03-01 0.00006800
2008-04-01 0.00043605
2008-05-01 0.00009230
2008-06-01 0.00045079
2008-07-01 0.00007296
2008-08-01 0.00007751
2008-09-01 0.00100600
2008-10-01 0.00143910
2008-11-01 0.33034418
2008-12-01 0.51440340
2009-01-01 0.88957355
2009-02-01 0.25577480
2009-03-01 0.41433570
2009-04-01 0.74651801
2009-05-01 0.33856283
2009-06-01 0.42774889
2009-07-01 0.48795694
2009-08-01 0.71946832
2009-09-01 0.46052713
2009-10-01 0.57060378
2009-11-01 0.14836449
2009-12-01 0.00006718
2010-01-01 0.01162395
2010-02-01 0.01441466
2010-03-01 0.04064498
2010-04-01 0.00306491
2010-05-01 0.00220650
2010-06-01 0.02050141
2010-07-01 0.08775397
2010-08-01 0.03607435
2010-09-01 0.02333520
2010-10-01 0.04578870
2010-11-01 0.01833601
2010-12-01 0.05317480
2011-01-01 0.01786932
2011-02-01 0.01365632
2011-03-01 0.01141326
2011-04-01 0.02679843
2011-05-01 0.00286491
2011-06-01 0.01149728
2011-07-01 0.00378418
2011-08-01 0.00376005
2011-09-01 0.00754814
2011-10-01 0.01773537
2011-11-01 0.02728695
2011-12-01 0.02042721
2012-01-01 0.01713906
2012-02-01 0.00425326
2012-03-01 0.00185339
2012-04-01 0.00211952
2012-05-01 0.00474464
2012-06-01 0.01176716
2012-07-01 0.01576151
2012-08-01 0.00371303
2012-09-01 0.00108501
2012-10-01 0.00361781
2012-11-01 0.00991900
2012-12-01 0.00990629
2013-01-01 0.00323417
2013-02-01 0.00227421
2013-03-01 0.00190889
2013-04-01 0.00175862
2013-05-01 0.00788951
2013-06-01 0.00332059
2013-07-01 0.00363989
2013-08-01 0.00324313
2013-09-01 0.00316052
2013-10-01 0.00676725
2013-11-01 0.01290138
2013-12-01 0.00679117
2014-01-01 0.00531255
2014-02-01 0.00873228
2014-03-01 0.00756104
2014-04-01 0.00230088
2014-05-01 0.00209458
2014-06-01 0.00387183
2014-07-01 0.01083553
2014-08-01 0.00727779
2014-09-01 0.01330806
2014-10-01 0.01212399
2014-11-01 0.02739405
2014-12-01 0.03347469
2015-01-01 0.06796147
2015-02-01 0.49527148
2015-03-01 0.10284228
2015-04-01 0.04399090
2015-05-01 0.06648239
2015-06-01 0.03526332
2015-07-01 0.03255572
2015-08-01 0.08719534
2015-09-01 0.12880022
2015-10-01 0.16455627
2015-11-01 0.15574060
2015-12-01 0.23122272
2016-01-01 0.10213586
2016-02-01 0.01982891
2016-03-01 0.01241864
2016-04-01 0.00273837
2016-05-01 0.00121104
2016-06-01 0.00033149
2016-07-01 0.00097140
2016-08-01 0.00259572
2016-09-01 0.00117820
2016-10-01 0.00201212
2016-11-01 0.00089734
2016-12-01 0.00038916
2017-01-01 0.00120116
2017-02-01 0.00255991
2017-03-01 0.00245905
2017-04-01 0.00482727
2017-05-01 0.01009093
2017-06-01 0.00356275
2017-07-01 0.00510834
2017-08-01 0.00472519
2017-09-01 0.00608153
2017-10-01 0.00451436
2017-11-01 0.01064027
2017-12-01 0.00469033
2018-01-01 0.00234891
2018-02-01 0.00110557
2018-03-01 0.00268355
2018-04-01 0.00316639
2018-05-01 0.00183985
2018-06-01 0.00139118
2018-07-01 0.00285305
2018-08-01 0.00602820
2018-09-01 0.01454217
2018-10-01 0.00445780
2018-11-01 0.00403632
2018-12-01 0.00418153
2019-01-01 0.00638944
2019-02-01 0.00392411
2019-03-01 0.00313191
2019-04-01 0.00155918
2019-05-01 0.00214367
2019-06-01 0.00632849
2019-07-01 0.00621803
2019-08-01 0.00988937
2019-09-01 0.00870752
2019-10-01 0.00822112
2019-11-01 0.00279627
2019-12-01 0.00352129
2020-01-01 0.00166364
2020-02-01 0.00058860
2020-03-01 0.00220056
2020-04-01 0.10668638
2020-05-01 0.85020305
2020-06-01 0.00892741
2020-07-01 0.00415717
2020-08-01 0.00138669
2020-09-01 0.00022754
2020-10-01 0.00041920
2020-11-01 0.00199377
2020-12-01 0.00076999
2021-01-01 0.00083447
2021-02-01 0.00090311
2021-03-01 0.00033070
2021-04-01 0.00005715
2021-05-01 0.00016099
2021-06-01 0.00004132
2021-07-01 0.00002005
2021-08-01 0.00006911
2021-09-01 0.00003858
2021-10-01 0.00009687
2021-11-01 0.00002318
2021-12-01 0.00001021
2022-01-01 0.00001177
2022-02-01 0.00004565
2022-03-01 0.00000186
2022-04-01 0.00000055
2022-05-01 0.00001003
2022-06-01 0.00001955
2022-07-01 0.00006328
2022-08-01 0.00010670
2022-09-01 0.00005543
2022-10-01 0.00061948
2022-11-01 0.00059713
2022-12-01 0.00004668
2023-01-01 0.00006299
2023-02-01 0.00010297
2023-03-01 0.00003400
2023-04-01 0.00003271
2023-05-01 0.00000899
2023-06-01 0.00006250
2023-07-01 0.00016045
2023-08-01 0.00001619
2023-09-01 0.00015429
2023-10-01 0.00002792
2023-11-01 0.00023273
2023-12-01 0.00194869
2024-01-01 0.00247482
2024-02-01 0.00091999
2024-03-01 0.00044912
2024-04-01 0.00007002
2024-05-01 0.00022592
2024-06-01 0.00037357
2024-07-01 0.00156131
2024-08-01 0.00127785
2024-09-01 0.00163716
2024-10-01 0.00141920
2024-11-01 0.00106685
2024-12-01 0.00114610
2025-01-01 0.00069323
2025-02-01 0.00072309
2025-03-01 0.00011653
2025-04-01 0.00127252
2025-05-01 0.00202702
2025-06-01 0.00119749
2025-07-01 0.00037995
2025-08-01 0.00221640
2025-09-01 0.00083559
2025-10-01 0.00206582
2025-11-01 0.00289276
2025-12-01 0.00214088
2026-01-01 0.00144934
2026-02-01 0.00020089
2026-03-01 0.00020099
2026-04-01 0.00006647
2026-05-01 0.00004380
2026-06-01 0.00000000

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