A commonly overlooked cost
Most retirement planning discussions focus on daily spending — rent, food, travel. But National Health Insurance (NHI) premiums don't stop at retirement. Your NHI status changes, and the monthly premium can be NT$800–4,000+ depending on your situation.
For foreign nationals with Alien Resident Certificates (ARC) who contribute to NHI: these rules apply to you too.
Six NHI categories
NHI classifies enrollees into six categories. Your category determines how your premium is calculated.
| Category | Typical member |
|---|---|
| 1 | Employees (company workers, civil servants, business owners) |
| 2 | Professional union members (freelancers) |
| 3 | Farmers / fishermen |
| 4 | Military / alternative service |
| 5 | Low-income households |
| 6 | Regional population (everyone else) |
When you retire from salaried work, you lose your Category 1 status. Common options:
- Transition to Category 6 (pay yourself)
- Join under a family member's Category 1 (as dependent)
Category 6 premium
Monthly premium (2024): approximately NT$826 per adult.
Calculation:
- Based on a "reference insured salary" of NT$37,500
- Rate: 5.17%
- Government subsidizes 40%, individual pays 60%
Each Category 6 adult pays this flat amount regardless of actual income.
Dependent enrollment
If your spouse or child is still employed (Category 1), you can enroll as a dependent under their insurance.
Premium: calculated based on the primary's insured salary × rate × personal share.
Example: spouse is Category 1, insured salary NT$50,000 → spouse pays ~NT$776/month. You as dependent also pay ~NT$776/month.
But the primary insured can enroll at most 3 dependents before the rate maxes out.
Common misunderstanding: dependents don't enroll for free. Both primary and dependents pay separately.
Supplementary premium (2.11%)
Beyond the monthly premium, specific income categories are subject to a 2.11% supplementary premium:
- Dividends (single payment ≥ NT$20,000)
- Interest (single payment ≥ NT$20,000)
- Rental income
- Professional fees
- Part-time wages
Retirees often receive significant dividend income. A single Taiwan stock dividend of NT$100,000 triggers NT$2,110 in supplementary premium.
Notes:
- Taiwan stock dividends: subject to 2.11%
- US / foreign dividends: NOT subject (NHI doesn't reach overseas)
- Interest: NT$20K per-payment threshold. Spreading across accounts can sometimes reduce frequency.
Real-world premium scenarios
Scenario 1: Single retiree (age 50)
- Category 6: ~NT$830/month
- Monthly dividends NT$30K: 2.11% supplementary ~ NT$630/month
- Total: ~NT$1,460/month or NT$17,500/year
Scenario 2: One spouse still employed
- Spouse (Category 1, insured NT$50K): NT$776/month
- You as dependent: NT$776/month
- Total: ~NT$1,552/month or NT$18,600/year
Comparable to Scenario 1. If spouse's insured salary is higher, dependent enrollment becomes more expensive than Category 6.
Scenario 3: Both retired
- Both Category 6: NT$830 × 2 = NT$1,660/month
- Plus supplementary premium on dividends
- Total: ~NT$2,000+/month
Optimization strategies
1. Reduce supplementary premium
- Split dividends over time: single payments below NT$20K are exempt. Tough with ETFs (fixed distribution dates) but possible with direct stock holdings.
- Hold US dividend ETFs: foreign dividends aren't subject to Taiwan NHI supplementary premium (though AMT considerations apply — see AMT article).
- Accumulating ETFs: funds that reinvest rather than distribute (like many European UCITS — VT has a distributing variant but accumulating versions exist abroad).
2. Choose the right NHI category
- Category 6 vs dependent-under-spouse: compute both, pick cheaper.
- If you keep a part-time job, remaining in Category 1 might cost less than Category 6 (because Category 1 shares cost with employer).
- Joining a professional union (Category 2) is an option for some self-employed.
3. Plan for the NHI cost in retirement budget
Over 30 years of retirement, a couple paying ~NT$2,000/month spends ~NT$720,000 just on NHI. Not a small line item. Include it in your retirement budget via 4% Withdrawal Calculator by adding it to annual expenses.
For foreign nationals leaving Taiwan
If you leave Taiwan permanently and give up your ARC, you disenroll from NHI. Your previous contributions are not refunded. If you return later with a valid ARC, you re-enroll (usually with a 6-month waiting period).
Quick summary
Category 6 single person: ~NT$830/month base. Couples: ~NT$1,660+. Add supplementary premium on Taiwan dividends.
Plan for NT$25,000–40,000/year per couple in retirement NHI costs, or more if you have heavy Taiwan dividend income.
Tools
- 4% Withdrawal Calculator — include NHI in annual expenses
- Retirement Gap — full retirement picture
Official sources
- National Health Insurance Administration — premium calculation, categories, enrollment changes
- Supplementary Premium page — details on the 2.11% levy
- Ministry of Health and Welfare — NHI policy oversight
Disclaimer
NHI rates and rules are adjusted annually. Refer to the National Health Insurance Administration for current year rules.