Savings projection with compound interest

Annual Salary (Gross)
×₩10K
Monthly expenses
×₩10K
Monthly Take-Home
0 KRW
Monthly savable
0 KRW
Quick goal select
Goal amount
×₩10K
Estimates achievement time accounting for compound interest and returns.
Current savings
×₩10K
Expected annual return
%
Time to goal
0 ×₩10K0 ×₩10K
Compound Growth Simulation
See how your money grows month by month — and exactly how much of it comes from interest.
Principal Compound returns Goal
4 Principles to Save Faster
RULE OF 72
72 ÷ r
= years to double your money
Compounding, distilled to one number

At 4% returns, money doubles in 18 years; at 7%, about 10 years. A fast mental model for estimating long-horizon compounding.

EMERGENCY FUND
3–6 mo
of expenses, held in liquid cash
Emergency fund first, investing second

Without a buffer, a job loss or medical bill forces you to sell investments at the worst time. Keep it in a high-yield savings or CMA account — not a brokerage.

PAY YOURSELF FIRST
+10–20 pts
savings-rate boost, instantly
Save on payday, spend what's left

Auto-transfer to savings the day your salary lands. Living on what remains — instead of saving what's left — is the most reliable way to raise your savings rate.

TAX-ADVANTAGED
Up to 16.5%
instant return via tax credit
Fill tax-advantaged accounts first

Contributing to IRP or pension savings funds earns a 13.2–16.5% tax credit immediately — before any market returns. That guaranteed yield is hard to beat anywhere else.

FAQ

How should I set a savings goal?

Start by defining a specific target amount and deadline. Setting separate goals by purpose — emergency fund, wedding, deposit, retirement — makes it easier to prioritize. For short-term goals, principal-protected products are generally preferred; for long-term goals, diversified investing to leverage compound growth is a common approach.

How much should my emergency fund be?

Generally 3–6 months of living expenses. Dual-income households and stable careers can lean toward 3 months; freelancers and single-earners should target 6+ months. Keep it in a liquid account (high-yield savings, CMA) so you can access it immediately — not in a brokerage.

How should I set a realistic return rate for planning?

Bank deposits and savings accounts offer principal protection but lower yields, while diversified investing can generate higher long-term average returns but carries the risk of losses. If you hold mostly cash, use a conservative figure in line with deposit rates. If you plan long-term diversified investing, refer to historical index averages as a reference point. Past returns do not guarantee future results, and the shorter your timeline, the more conservative your input should be.

How can I realistically increase my monthly savings?

The most effective approach is to automate savings transfers on payday — save first, spend what remains. Regularly auditing fixed costs like telecom, subscriptions, and insurance to eliminate unnecessary items also helps. Directing a portion of each salary increase straight into savings lets you raise your savings rate without feeling a drop in living standards. Setting concrete savings goals with a specific amount and target date helps prioritize spending.

Savings accounts vs. investing — where do I start?

Money you'll need in 1–2 years (wedding, moving, car) belongs in savings or bank deposits. Money with a 5+ year horizon (retirement, tuition, long-term housing) belongs in diversified investments. Matching the time horizon to the asset class matters more than picking winners — short-horizon money in stocks can force you to sell at a loss.

How do I enter the return on a tax-advantaged savings product in this calculator?

For tax-advantaged products such as the Youth Leap Account, IRP, or ISA, calculate the effective return by adding government contributions, tax-exemption benefits, and tax credit effects, then enter that figure in the annual return slider. For example, if you convert the real annual return — combining the nominal interest rate with the tax-free and contribution bonuses — into a single percentage and enter it, the result card will immediately show how much sooner you can reach your goal compared to a regular savings account.

What should I do when I think I might not reach my long-term savings goal?

When a goal seems out of reach, the most practical approach is to adjust one or more of three levers: lower the target amount, extend the deadline, or increase monthly contributions. Use the Savings Goal Calculator to try different combinations and find one that is achievable. Rather than abandoning the goal entirely, breaking it into smaller milestones and approaching it step by step makes it much easier to stay consistent.