Weighted Average Yield Rates (Before Tax), 91 Days

Treasury bill auctions. Per cent, weekly.

Values

Latest · 16 Oct 20269.30%+0.04 pts on 9 Oct 2026

Period	Per cent	Change, pts
16 Oct 2026	9.30%	+0.04
9 Oct 2026	9.26%	+0.01
2 Oct 2026	9.25%	+0.05
25 Sep 2026	9.20%	+0.02
18 Sep 2026	9.18%	+0.15
11 Sep 2026	9.03%	+0.07
4 Sep 2026	8.96%	−0.10
28 Aug 2026	9.06%	−0.16
21 Aug 2026	9.22%	−0.22
14 Aug 2026	9.44%	−0.33
7 Aug 2026	9.77%	−0.09
31 Jul 2026	9.86%	−0.09

Data source: Central Bank of Sri Lanka, 2026-10-14 Press Release-TREASURY BILL AUCTION HELD ON 14 October 2026 - English (14 Oct 2026)

Macro Lab · LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W · CC BY 4.0

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About this series

Source Central Bank of Sri Lanka, compiled by Macro Lab
Unit Per cent
Date range 4 Jan 1996 – 16 Oct 2026
Last checked 14 Oct 2026

Checks: 120 recorded for this series, listed below.

Details

Name in the warehouse: Treasury bill auctions: Weighted Average Yield Rates (Before Tax), 91 Days
Read from: CBSL statistical tables (Central Bank of Sri Lanka)
Source page: https://www.cbsl.gov.lk/en/statistics/statistical-tables
Notes: Weekly treasury bill auction, by tenor. The period is the issue date, so the spacing follows the auction calendar. From December 2025 continued from the PDMO auction result press releases (load_auction_releases.py), CBSL having stopped the workbook: each such observation carries the file_id of its release.

Source documents

Vintages

47 vintages, the latest published 14 Oct 2026.

Related series

Articles using this series

Analysis10 Oct 2026The week to 9 October: more money from workers abroad, lending rates creeping up and a steady rupee

Source discrepancies

What the warehouse found when it checked this series: the same figure from two agencies, splice overlaps, published rates against ones recalculated from the index, and outliers.

For information29 Jun 2007
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information6 Jul 2007
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information30 May 2008
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information6 Jun 2008
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information13 Jun 2008
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information27 Jun 2008
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information29 Aug 2008
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information5 Sep 2008
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information12 Sep 2008
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information19 Sep 2008
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information3 Oct 2008
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information24 Oct 2008
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information31 Oct 2008
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information7 Nov 2008
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information12 Mar 2010
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information9 Apr 2010
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information10 Sep 2010
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information17 Sep 2010
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information24 Sep 2010
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information1 Oct 2010
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information8 Oct 2010
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information15 Oct 2010
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information26 Oct 2012
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information7 Dec 2012
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information26 Jul 2013
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information2 Aug 2013
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information9 Aug 2013
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information23 Aug 2013
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information25 Oct 2013
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information1 Nov 2013
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information8 Nov 2013
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information15 Nov 2013
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information7 Feb 2014
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information2 May 2014
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information9 May 2014
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information22 Aug 2014
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information29 Aug 2014
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information5 Sep 2014
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information26 Sep 2014
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information3 Oct 2014
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information17 Oct 2014
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information24 Oct 2014
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information31 Oct 2014
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information7 Nov 2014
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information14 Nov 2014
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information21 Nov 2014
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information28 Nov 2014
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information5 Dec 2014
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information12 Dec 2014
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped
For information19 Dec 2014
Checked against another source.

Placeholder zero: 0.
LK.DEBT.TBILL.AUCTION.WEIGHTED_AVERAGE_YIELD_RATES_BEFORE_TAX.91_DAYS.W: 0 in a series that cannot be 0 (government security yield), dropped

47 more checks for information. The first 50 of 120 checks are listed.