The Complete Year-End Tax Saving Guide for Developers: IRP, Pension Savings, and ISA Practical Strategies

Pension Savings: Max 9 million KRW annual contribution
IRP:            Max 9 million KRW annual contribution
Combined Limit: Max 9 million KRW eligible for tax credit

Tax Credit Rates:
- Total salary 55 million KRW or less: 16.5% (including local tax)
- Total salary over 55 million KRW: 13.2% (including local tax)

[Total salary 55 million KRW or less]
9 million KRW x 16.5% = 1.485 million KRW refund

[Total salary over 55 million KRW]
9 million KRW x 13.2% = 1.188 million KRW refund

Recommended Strategy (for salary over 55 million KRW)

Pension Savings Fund: 6 million KRW (aggressive investment, ETFs)
IRP:                  3 million KRW (stable investment, deposits + bonds)
Total:                9 million KRW -> 1.188 million KRW tax credit

Why put more in Pension Savings:
1. Early withdrawal possible (emergency fund role)
2. 100% risky asset investment allowed
3. Fees are generally lower

[Pension Savings Fund - Open at a brokerage]

1. Open a "Pension Savings" account on a brokerage app
2. Set up monthly auto-transfer of 500,000 KRW (6 million KRW/year)
3. Buy ETFs:
   - KODEX 200: 40% (Korean large caps)
   - TIGER US S&P500: 40% (overseas stocks)
   - KODEX 10-Year Treasury: 20% (bonds)
4. Rebalance once a year

[IRP - Open at a brokerage]

1. Open an "IRP" account on a brokerage app
2. Contribute 3 million KRW lump sum in December (or 250,000 KRW/month)
3. Investment products:
   - Principal-guaranteed (deposits): 50%
   - Bond funds: 30%
   - Stock ETFs: 20% (within 70% risky asset limit)

Eligibility: Salary earners or business income earners
Mandatory period: 3 years
Annual contribution limit: 20 million KRW (total 100 million KRW)
Tax-free limit: 2 million KRW (4 million KRW for low-income type)
Excess: 9.9% separate taxation (vs regular 15.4%)

Additional tax credit when converting ISA to pension account at maturity!

When converting ISA to Pension Savings/IRP:
- Additional tax credit of 10% of converted amount (max 3 million KRW)
- Separate from the existing 9 million KRW limit!

Example:
ISA 3-year maturity: 30 million KRW
-> Convert to pension savings
-> 3 million KRW x 13.2% = 396,000 KRW additional tax credit

[3-Year Roadmap]

Year 1: Open ISA, contribute 1 million KRW/month (12 million KRW/year)
Year 2: Continue 1 million KRW/month + investment management
Year 3: Continue 1 million KRW/month + maturity preparation

At maturity:
- Tax-free up to 2 million KRW profit
- Excess taxed at 9.9% separate taxation
- Convert entire amount to pension account -> additional tax credit

Re-open ISA -> repeat 3-year cycle!

Use credit cards up to 25% of total salary (maximize points/benefits)
Use debit cards for amounts exceeding 25% (higher deduction rate)

Deduction rate comparison:
- Credit card: 15%
- Debit card/cash receipts: 30%
- Traditional markets: 40%
- Public transportation: 80%

Example (salary 60 million KRW):
- Up to 25% = 15 million KRW -> use credit card
- Over 15 million KRW -> use debit card
- Income deduction limit: 3 million KRW

For homeless household heads:
- 40% income deduction on annual contributions
- Limit: 3 million KRW contribution/year -> 1.2 million KRW deduction
- Recommended: 250,000 KRW monthly auto-transfer

Three benefits in one: housing lottery points + income deduction + interest!

10,000 KRW annual donation:
- Full 100,000 KRW tax credit (100%)
- + 30,000 KRW worth of return gifts (30% ratio)
= Effectively 130,000 KRW gain!

Over 100,000 KRW up to 5 million KRW:
- 16.5% tax credit on excess amount

Priority 1: Pension Savings Fund 6 million KRW/year (tax credit 990,000 KRW)
Priority 2: Housing Subscription Savings 3 million KRW/year (income deduction 1.2 million KRW)
Priority 3: Hometown Love Donation 100,000 KRW (full credit + return gifts)

Expected tax savings: ~1.3 million KRW/year

Priority 1: Pension Savings 6 million + IRP 3 million (tax credit 1.188 million KRW)
Priority 2: ISA 12 million KRW/year (tax-free investing)
Priority 3: Housing Subscription 3 million KRW
Priority 4: Switch to debit card (for amounts over 25%)

Expected tax savings: ~2 million KRW/year

Priority 1: Pension Savings 6 million + IRP 3 million (tax credit 1.188 million KRW)
Priority 2: ISA 20 million KRW/year (maximum contribution)
Priority 3: Venture investment income deduction (if applicable)
Priority 4: Optimize dependent deductions (family members)

Expected tax savings: ~2.5 million KRW/year

Bad:  Lump sum 6 million KRW pension savings on December 31
Good: Monthly auto-transfer of 500,000 KRW

Why:
- Dollar cost averaging (DCA) effect on investments
- Auto-transfer means you will not forget
- Avoid December bank rush

Bad:  9 million KRW entirely in IRP
Good: 6 million KRW pension savings + 3 million KRW IRP

Why:
- IRP early withdrawal is nearly impossible
- Pension savings allows withdrawal in emergencies
- Pension savings offers more investment flexibility

Income Deduction: Reduces taxable income
  -> Actual tax savings = deduction amount x tax rate

Tax Credit: Directly subtracted from tax owed
  -> Actual tax savings = credit amount itself

Example: Salary 70 million KRW (24% rate)
  - 1 million KRW income deduction -> saves 240,000 KRW
  - 1 million KRW tax credit -> saves 1 million KRW
  -> Tax credit is much more effective!

[ ] Open pension savings fund account (brokerage)
[ ] Open IRP account (brokerage)
[ ] Open ISA account (brokerage)
[ ] Sign up for housing subscription savings (bank)
[ ] Set up auto-transfers (pension savings + housing subscription)
[ ] Plan credit/debit card usage split
[ ] Make 100,000 KRW hometown love donation
[ ] Check simplified year-end settlement service (January)
[ ] Review withholding tax receipt
[ ] Plan next year's tax saving strategy (December)