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COFIX
  • COFIX
  • What is COFIX?
  • Calculation of COFIX
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Calculation of COFIX

1. Each Information Provider provides necessary information for COFIX calculation to the Korea Federation of Banks (KFB) by the time below.

① COFIX by Outstanding Balance and COFIX by Monthly Acquired New Funds : at 3 p.m. on the 14th of every month (or on the preceding business day if the 14th falls on a holiday)

② Short-Term COFIX : at 5 p.m. on the second business day of every week.

2. The KFB then calculates the COFIX by Outstanding Balance and by Monthly Acquired New Funds according to the following formula.

① COFIX by Outstanding Balance= ∑ (WAMB* X MEB**) / ∑ MEB

* WAMB : Weighted average interest rate of month-end outstanding balance of Information Provider
** MEB : Month-end outstanding balance of Information Provider

② COFIX by Monthly Acquired New Funds= ∑ ( WAMF* X MAF**) / ∑ MAF

* WAMF : Weighted average interest rate of monthly acquired new funds of Information Provider
** MAF : Monthly acquired new funds of Information Provider

③ Short-Term COFIX = ∑ (WAWF* × WAF**) / ∑ WAF**

* WAWF : Weighted average interest rate of weekly acquired new funds of Information Provider
** WAF : Weekly acquired new funds of Information Provider

3. A previous month’s COFIX is announced on the KFB website (www.kfb.or.kr) as an annualized rate (rounded to two decimal places) after the time below.

① COFIX by Outstanding Balance and COFIX by Monthly Acquired New Funds : at 3 p.m. on the 15th of every month (or on the next business day if the 15th falls on a holiday)

② Short-Term COFIX : at 3 p.m. on the third business day of every week.

The announcement date may be adjusted, however, in the cases of natural disasters or other unforeseen circumstances.

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