KB Kookmin Bank Launches KB Card Sswidam Jeokgeum at Up to 12% Interest

On Friday, August 21, 2026, KB Kookmin Bank launched KB Card Sswidam Savings (KB카드쓰담적금), a six-month installment savings account — known in Korea as jeokgeum (적금) — that advertises up to 12.0% annual interest when customers meet KB Kookmin Card spending and banking conditions. Sales are first-come, first-served, capped at 100,000 accounts.

The product ties monthly saving to card use and other transaction milestones, joining a wider deposit-rate competition among Korean banks after the Bank of Korea raised its policy rate in July 2026 and market volatility pushed savers back toward guaranteed bank products.

Editor’s note: This article draws on DigitalToday, Newspim, Asia Business Daily, and Herald Business reporting from August 21, 2026. Rates, eligibility rules, and sales caps may change after publication.

What KB Kookmin Bank launched

KB Card Sswidam Savings is a card-linked jeokgeum sold through KB Kookmin Bank in partnership with KB Kookmin Card. Core terms announced on August 21:

Feature	Detail
Product name	KB Card Sswidam Savings (KB카드쓰담적금)
Term	6 months
Monthly deposit range	10,000–300,000 won (about $7–$212), flexible each month
Sales limit	100,000 accounts, first-come, first-served
Base rate	2.0% per year before tax (as of Aug. 21)
Maximum rate	12.0% per year before tax if all preferential tiers apply

A bank official asked customers to sign up early given the account cap, according to Korean business media.

Customers can open the product through KB Kookmin Bank branches or its mobile banking channels, subject to each channel’s availability once sales begin.

How the 12% rate is built

The headline 12.0% figure is not a flat base rate. KB Kookmin Bank applies a 2.0% foundation rate and stacks up to 10.0 percentage points in preferential tiers:

Preferential tier	Bonus (per year)	Condition (summary)
Credit card usage	+6.0 percentage points	Meet KB Kookmin Card spending requirements
Average account balance	+2.0 percentage points	Satisfy an average-balance threshold on linked accounts
First salary transfer	+2.0 percentage points	Complete a first salary deposit through the bank

Only customers who satisfy all three tiers reach the 12.0% ceiling. Partial compliance yields a lower blended rate. As with other Korean jeokgeum products, advertised yields are typically before tax, and withholding rules apply at maturity.

The structure mirrors promotional jeokgeum campaigns at rival lenders — including Shinhan Bank’s 9-dan installment savings launched earlier in August — that combine a modest base rate with large conditional bonuses tied to card spend and payroll activity.

Why jeokgeum is in the spotlight

Korean banks have been raising standard deposit and jeokgeum rates since the Bank of Korea lifted its seven-day base rate from 2.50% to 2.75% on July 16, 2026. KB Kookmin had already moved flagship one-year time deposits toward the 3.2% band and lifted online jeokgeum ceilings into the mid-3% range in late July.

At the same time, financial-sector data cited in Korean media show household money rotating from short-term savings and equity-linked products back into bank deposits as yields climb. The five major commercial banks held roughly 965 trillion won in time deposits as of mid-August, while balances in some MMDA-style accounts fell sharply — a pattern analysts describe as savers prioritizing guaranteed returns over market swings.

KB’s 12% capped jeokgeum sits at the aggressive end of that competition: a limited-quantity offer designed to pull in card-active customers and new payroll relationships, not a blanket rate increase on existing accounts.

What savers should check before signing up

Promotional jeokgeum accounts carry fine print that headline rates alone do not show:

• Account cap: Once 100,000 subscriptions are filled, the product closes regardless of the six-month term length.
• Monthly limits: Deposits must stay within the 10,000–300,000 won monthly band; exceeding or missing payments can affect preferential tiers under standard jeokgeum rules.
• Conditional bonuses: The 6% card tier, 2% balance tier, and 2% salary tier each require separate qualification — missing one blocks the full 12% payout.
• Tax treatment: Stated rates are pre-tax; net returns depend on individual tax status and product withholding rules.
• Comparison shopping: Rival banks are running their own high-yield jeokgeum promotions with different caps, card requirements, and maturity lengths.

Households weighing a switch should compare base rates, eligibility windows, and sales limits across lenders rather than the banner percentage alone.

Industry outlook

Analysts quoted in Korean business press expect continued deposit-rate adjustments while funding costs stay elevated after the July central-bank move. Limited-quantity jeokgeum launches like KB Card Sswidam Savings are likely to remain a marketing tool — alongside routine base-rate pass-through — as banks compete for sticky card-and-payroll customers.

For savers, the practical question is whether the conditions required for a top-tier rate fit their spending and banking habits, and whether a six-month jeokgeum aligns with their savings timeline before caps fill.

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Discussion

A 12% jeokgeum headline grabs attention, but the conditions behind it can matter as much as the number on a banner.

1. Would you restructure card spending or salary deposits to chase a capped 12% jeokgeum — or prefer a simpler base-rate account near 3%?

The trade-off is maximum yield versus eligibility rules, sales limits, and a six-month lock-in.

2. If you already hold a jeokgeum at another Korean bank, does a first-come, first-served cap change how quickly you would open a new account?

Or would you wait to see whether rival lenders match the offer?

If you have compared Korean installment savings products recently, what mattered most — the advertised top rate, the base rate, or how easy it was to meet card and payroll conditions?

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