12-Month Treasury Bill Primary Market Yield Rate (end of period) (monthly)
Treasury bill yields. Per cent, monthly.
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Data source: Central Bank of Sri Lanka, Interest Rates - Monthly (2003 to Latest (12 Oct 2026)
Macro Lab · LK.DEBT.TBILL.TBILL_12M_YIELD_EOP.M · CC BY 4.0
About this series
- Source Central Bank of Sri Lanka, compiled by Macro Lab
- Unit Per cent
- Date range Jan 2003 – Aug 2026
- Last checked 12 Oct 2026
Checks: 1 recorded for this series, listed below.
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Details
- Name in the warehouse
- 12-Month Treasury Bill Primary Market Yield Rate (end of period) (monthly)
- Read from
- CBSL statistical tables (Central Bank of Sri Lanka)
- Source page
- https://www.cbsl.gov.lk/en/statistics/statistical-tables
- Notes
- CBSL table4.04 'Interest Rates - Monthly'. Not held anywhere else in the warehouse (CBSL audit, 2026-09-22).
Source documents
Vintages
One vintage so far, published 12 Oct 2026. Revisions show here once a later release changes a value.
Related series
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.
- A true readingJun 2022
This series reads 23.84; the same figure from the other source reads 22.04. Compared with
LK.DEBT.TBILL.364D.YIELD.W.Two agencies: 23.84 and 22.04, difference 1.8.
T-bill 12M end-of-period yield (table4.04) vs nearest weekly primary-market yield (2022-06-24)
LK.DEBT.TBILL.TBILL_12M_YIELD_EOP.M, 2022-06: end-of-period reading 23.84% vs nearest weekly primary auction 22.04%, diff +1.80pp. Genuine yield movement between the auction date and the table's own end-of-period reading, larger than the check's 1pp tolerance; only 10 of ~750 compared periods fall outside the band (~1.3%). Not a data or check error.