Current & Historical SOFR and SONIA Rates
The latest published overnight rates for USD (SOFR) and GBP (SONIA), plus a full historical chart sourced directly from the New York Fed and the Bank of England.
SOFR (USD) · Act/360 · NY Fed
3.65%
Published for July 28, 2026
SONIA (GBP) · Act/365 · Bank of England
3.73%
Published for July 27, 2026
Historical Chart
Calculate a Loan Using These Rates
Use the actual daily SOFR or SONIA fixings shown above to calculate compounded-in-arrears or Term-rate interest on any loan, with a full daily ledger and Excel export.
Open Calculator →Frequently Asked Questions
What is the current SOFR rate?
The most recently published SOFR rate is 3.65%, published for July 28, 2026. SOFR is published fresh each US business day by the New York Fed — see the card and chart above for the latest figure. For background on how it's calculated, see our guide to SOFR.
What is the current SONIA rate?
The most recently published SONIA rate is 3.73%, published for July 27, 2026. SONIA is published each London business day by the Bank of England. See our guide to SONIA for how it's calculated.
Where does this data come from?
SOFR data is pulled directly from the Federal Reserve Bank of New York's public Markets Data API. SONIA data is pulled directly from the Bank of England's public Interactive Statistical Database (IADB). Neither requires an API key or paid subscription — both are official government sources.
How far back does the historical chart go?
SOFR history starts April 3, 2018, its first published date. SONIA history under its reformed methodology starts April 23, 2018. Use the 3M / 6M / 1Y / Max buttons above the chart to change the range, or see our SOFR Index glossary entry for how to derive a compounded average rate between any two dates.