Top 6 Parking Accounts Compared (2026)

Four things to check when choosing a parking account

The deposit band that earns the high rate

It is easy to assume that the same rate applies to everything in the account, but many products change the rate by balance band. The direction differs from product to product.

전북은행 씨드모아통장 (small-balance tier) pays the preferential rate on balances of 50 million KRW or less. 케이뱅크 플러스박스 works the other way around, paying a higher rate on the portion above 50 million KRW. 카카오뱅크 세이프박스 runs at a single rate up to 100 million KRW.

SBI저축은행 사이다입출금통장 applies 2.70% per year up to 100 million KRW, and only the portion above 100 million KRW drops to 0.20%. Among savings bank parking accounts there are also products that split the balance into several bands and cut the rate sharply as the amount grows.

This is why the same 10 million KRW earns a different rate depending on the product. Start by checking whether your amount falls inside that product’s preferential band.

How long and how often the preferential rate applies

What separates products is whether the headline rate keeps applying or only applies for a set period.

씨드모아’s maximum 4.00% per year (before tax) applies for three months after a new account is opened, once per customer. From the fourth month the terms change.

If the money will be spent within three months, the terms and the period line up. If you plan to leave it longer, you need to include the rate that applies afterwards to see what you actually earn.

The base rate

This is the rate you are left with when you do not meet the preferential conditions. Once 씨드모아’s preferential period ends, the base rate of 1.80% to 2.00% per year (before tax) applies depending on the balance band.

I once opened an account looking at the headline rate, failed to meet the conditions, and received only the base rate. Since then I read the conditions printed next to the headline rate first.

Preferential conditions split into those you clear once at signup and those that require monthly activity. The second kind drops the preferential rate for any month you skip. SBI저축은행 사이다입출금통장, by contrast, sets no preferential conditions at all.

When interest is paid

Some products pay daily, some monthly, and some quarterly. When paid interest is added to the principal, that interest earns interest as well. Even at the same rate, the timing and the amount you receive shift slightly.

Six products at a glance

The breakdown by amount is calculated using each product’s band rates. For products with preferential conditions, the figures assume the conditions are met.

Product by product

전북은행 씨드모아통장 (small-balance tier)

Up to 4.00% per year (before tax, as of July 2, 2026) applies to balances of 50 million KRW or less. This is the rate when the preferential conditions are met, and it applies for three months after opening, once per customer.

The preferential rate is built from marketing consent, first-time customer status, and a three-month bonus. These are cleared at signup, so there is nothing to keep up with each month. After three months, the base rate of 1.80% to 2.00% per year (before tax) applies depending on the balance band.

What defines this product is that it does not split the balance. Whether you deposit 5 million KRW or 50 million KRW, the same rate applies to the whole amount. That differs from products that sharply cut the rate on the portion above a threshold.

There is no cap on how much you can deposit. You may put in more than 50 million KRW, but the preferential rate applies to the portion at or below 50 million KRW. As a commercial bank deposit, it is covered by depositor protection.

Product page: m.jbbank.co.kr/s/KkDY34

전북은행 씨드모아통장 (large-balance tier)

Up to 4.00% per year (before tax, as of July 2, 2026) applies to the entire balance when it is 50 million KRW or more. The rate and preferential conditions match the small-balance tier; only the qualifying amount range differs. It applies for three months after opening, once per customer, after which the base rate of 1.80% to 2.00% per year (before tax) applies by balance band.

The preferential rate is not limited to the portion above 50 million KRW; it applies to the full deposit. With 80 million KRW deposited, the preferential rate covers all 80 million KRW rather than only 30 million KRW.

Product page: m.jbbank.co.kr/s/9tjRqG

SBI저축은행 사이다입출금통장

The rate is 2.70% per year (before tax) and the same rate applies up to 100 million KRW. Above 100 million KRW, 0.20% per year applies. The rate was raised by 0.7 percentage points on June 24, 2026, which is also the reference date of the 저축은행중앙회 comparison disclosure.

Because there are no preferential conditions, there is no marketing consent or card spending to keep track of. It is a non-face-to-face product opened through the 사이다뱅크 mobile app.

It keeps the arithmetic simple if you want to decide in advance where to move the money once 씨드모아’s three-month preferential period ends.

케이뱅크 플러스박스

The base rate is 1.70% per year, with 2.20% per year (before tax) on the portion above 50 million KRW. There is no deposit cap and the rate applies when the conditions are met.

The structure raises the average rate as the deposit grows. Balances of 50 million KRW or less earn 1.70% per year.

카카오뱅크 세이프박스

The rate is 1.60% per year (before tax) and stays the same up to 100 million KRW. Because it does not split the balance into bands, the calculation is simple. It applies when the conditions are met.

If you already use a 카카오뱅크 account, it works like a safe inside that account, so there is nothing to move.

토스뱅크 통장

The rate is 1.00% per year (before tax) with no balance bands. There are no preferential conditions to meet.

Interest is paid daily, which suits money that moves in and out often.

Which account suits which amount

Emergency savings of 5 million to 10 million KRW

In this band none of the six products run into band limits, so the difference in rates carries straight through to the result. Held for three months, 5 million KRW earns 42,647 KRW with 씨드모아 (small-balance tier), 28,787 KRW with SBI 사이다입출금통장, and 10,661 KRW with 토스뱅크 통장.

At 10 million KRW the figures are 85,295 KRW for 씨드모아, 57,574 KRW for SBI, and 36,250 KRW for 케이뱅크.

The gap widens with both amount and time. Held for one month, 10 million KRW shows a 21,555 KRW after-tax difference between 4.00% and 1.00% per year; over three months the same amount shows 63,972 KRW.

Lump sums of 10 million to 50 million KRW

Money waiting to be invested or a jeonse balance due in a few months sits here. Because 씨드모아’s small-balance tier covers deposits of 50 million KRW or less, this entire band qualifies for the preferential rate.

Held for three months, 30 million KRW earns 255,885 KRW with 씨드모아, 172,723 KRW with SBI, and 108,751 KRW with 케이뱅크. At 50 million KRW it is 426,476 KRW with 씨드모아 against 287,871 KRW with SBI, a gap of 138,605 KRW.

씨드모아’s small-balance tier applies the same rate to the whole balance up to 50 million KRW, so the average rate does not fall as the amount grows.

Above 50 million KRW

This is where the products differ most. 씨드모아 moves to the large-balance tier and applies up to 4.00% per year (before tax) to the entire balance of 50 million KRW or more. 케이뱅크 splits the calculation at 50 million KRW, paying 1.70% below and 2.20% above, while SBI continues at 2.70% per year up to 100 million KRW.

Held for three months, 80 million KRW earns 682,362 KRW with 씨드모아 (large-balance tier), 460,595 KRW with SBI 사이다입출금통장, and 321,989 KRW with 케이뱅크 플러스박스.

씨드모아’s preferential rate runs for three months, so the calculation uses that period.

Simplest, with no conditions

If keeping up with preferential conditions is the problem, 토스뱅크 통장 pays 1.00% per year with no conditions. 카카오뱅크 세이프박스 runs at a single 1.60% per year up to 100 million KRW, so there are no bands to calculate.

For a household account that money moves through often, convenience matters more than interest. Interest is calculated daily, so even a single day counts.

Interest by amount and by period

Three months is used as the basis because it matches 씨드모아’s preferential period.

Interest before tax is the principal multiplied by the annual rate, multiplied by the number of days held, divided by 365. Interest income tax of 15.4% is then deducted. That rate is 14% income tax plus 1.4% local income tax. Interest that is added to the principal and earns further interest is excluded, so actual receipts are slightly higher. The table stops at three months because that is 씨드모아’s preferential period; money held longer is covered in the next section.

Holding 10 million KRW at 4.00% per year for 92 days produces 100,821 KRW before tax, and after 15,526 KRW in tax you receive 85,295 KRW. Tax is the pre-tax interest multiplied by 15.4% and rounded to the nearest won.

The calculation changes with how long you hold it

A parking account is a demand deposit, so the rate is not fixed to a maturity date. When the bank adjusts the rate, the new rate applies from that day, and products whose preferential rate has a time limit revert to the base rate once that period ends.

So decide how long you will hold the money first, then look at the calculation for that period.

Money you will spend within three months

The two tables above apply as they are. 씨드모아’s preferential period is three months from opening, which lines up with this period. For 10 million KRW, after-tax interest is 85,295 KRW.

Money you will hold for a year or more

Include the rate that applies after the preferential period ends. Putting 10 million KRW in 씨드모아 at 4.00% per year for three months and the base rate of 2.00% per year for the remaining nine months gives 250,410 KRW before tax and 211,847 KRW after tax for one year. Against 84,600 KRW for the same amount held at 1.00% per year for a year, a gap remains.

This calculation excludes interest earned on interest paid out monthly. Actual receipts are slightly higher.

Products with no preferential period are calculated at the same band rate even over a year. For money you will hold for a full year, also look at time deposits, where the rate is fixed to maturity. A parking account is for money with no set spending date.

Conditions that are easy to miss in the table

Parking accounts and time deposits

A time deposit fixes the rate to maturity but pays less than the agreed rate if you break it early. A parking account calculates interest for the days held, whenever you withdraw.

Money with a set spending date fits a time deposit; money with no set date fits a parking account. Money you will spend within a few months without knowing the exact date is what a parking account is for.

When interest is paid

Products split between paying daily, monthly, and quarterly. Where paid interest is added to the principal, that interest earns interest as well. As long as the account stays open, interest is calculated for the days held regardless of when it is paid.

Depositor protection

A parking account is a demand deposit and is covered. The limit is 100 million KRW per person per financial institution, covering principal and interest combined, and has applied since September 1, 2025. Savings bank deposits are covered under the same limit.

A securities firm CMA is not covered, despite the similar name.

Before you open an account

Read the deposit band all the way through. Check whether the amount condition next to the headline rate says “or less” or “above”. Products run in opposite directions.

Check how long the preferential rate applies. If the period is fixed, such as three months, include the rate that follows to see what you actually earn.

Deduct interest income tax of 15.4%. Quoted rates are before tax. After tax, 84.6% remains.

Count the depositor protection limit by institution. Different branches of the same bank count as one place. To split, you have to change the institution itself.

Decide the amount first. Rather than choosing a product and then fitting the amount to it, set the amount and then choose the product that fits that band.

Frequently asked questions