Inflation-Linked Bonds (EDO) — How Do They Work?
How do Polish EDO inflation-linked bonds work? Interest calculation mechanics: base rate + CPI inflation. Historical returns, early redemption costs. Why EDO is the best inflation hedge for Polish investors.
- 5.35%
- EDO0936 first-year rate (September 2026 series)
- CPI + 2.00%
- rate from year 2, capitalized annually
- 15%+
- what EDO paid during Poland's 14.4% CPI year (2022)
- 3.00 PLN
- early-redemption fee per 100 PLN bond (purchases since Sep 2024)
Fact-checked against primary sources on · figures re-verified on regulator, issuer or SEC filings — not copied from other sites
Quick Answer
EDO bonds are 10-year Polish Treasury securities indexed to CPI inflation. In year 1, they pay a fixed rate of 5.35% (September 2026 offer). From year 2 onwards: CPI inflation + 2.00% margin, capitalized annually.
How EDO Bonds Work — The Mechanics
Year 1 — Fixed Promotional Rate
In the first year, EDO pays a fixed rate announced at issuance. For the September 2026 series (EDO0936) it's 5.35% per annum.
Example: You buy 100 bonds (10,000 PLN).
- Interest after year 1: 10,000 × 5.35% = 535 PLN
- Interest is capitalized — added to the bond's value
- New base: 10,680 PLN
Years 2–10 — CPI Inflation + Margin
From year 2, the interest rate is calculated as:
Interest rate = CPI inflation (year-over-year) + 2.00%
CPI inflation is taken from the last 12 months before each interest period starts. It's published by GUS (Central Statistical Office of Poland).
Example (Year 2): CPI inflation = 4.5%
- Interest rate: 4.5% + 1.0% = 5.5%
- Base: 10,680 PLN (after year 1 capitalization)
- Interest: 10,680 × 5.5% = 587.40 PLN
- New base: 11,267.40 PLN
Compounding — EDO's Secret Weapon
Every year, interest is added to the bond's value. Next year's interest is calculated on this higher base. This compound interest mechanism is what makes EDO outperform other bonds over the long term.
| Year | Base (PLN) | Rate | Interest (PLN) | New Base (PLN) |
|---|---|---|---|---|
| 1 | 10,000 | 5.35% | 535.00 | 10,535.00 |
| 2 | 10,535 | 6.50% | 684.78 | 11,219.78 |
| 3 | 11,220 | 6.50% | 729.29 | 11,949.07 |
| 4 | 11,949 | 6.50% | 776.69 | 12,725.76 |
| 5 | 12,726 | 6.50% | 827.17 | 13,552.93 |
| 6 | 13,553 | 6.50% | 880.94 | 14,433.87 |
(Year 1 at the fixed 5.35%; years 2+ assume 4.5% CPI + the 2.00% margin = 6.50%.) | 7 | 13,958 | 5.50% | 767.71 | 14,726.04 | | 8 | 14,726 | 5.50% | 809.93 | 15,535.97 | | 9 | 15,536 | 5.50% | 854.48 | 16,390.45 | | 10 | 16,390 | 5.50% | 901.47 | 17,291.93 |
At constant 4.5% inflation: 10,000 PLN → 17,292 PLN gross after 10 years.
After Belka tax (19% on 7,292 PLN profit = 1,385 PLN): 15,907 PLN net.
Historical EDO Returns
EDO bonds have been available since 2004. Their behavior is best illustrated across different inflation periods:
Low Inflation Era (2015–2019)
CPI inflation: 0–2.5%
- EDO rate: 1.0–3.5%
- Modest but real positive returns
High Inflation Era (2021–2023)
- 2021: CPI 5.1% → EDO 6.1%
- 2022: CPI 14.4% → EDO 15.4%
- 2023: CPI 11.4% → EDO 12.4%
At peak inflation, EDO paid over 15% annually. No bank deposit came close. 10,000 PLN invested in EDO in 2020 was worth approximately 15,800 PLN by end of 2023 — preserving real purchasing power despite record inflation.
Stabilization Period (2024–2026)
CPI inflation: 3.5–5%
- EDO: 4.5–6%
- Stable, real positive returns
Savings in one bank, investments in another? See it all in one place — and how many months it could carry you.
See your Freedom Runway — freeWhy EDO Is the Best Inflation Hedge
1. Automatic Indexation
No action required — the rate automatically adjusts to inflation. Bank deposits don't do this — your agreed rate stays fixed regardless of inflation changes.
2. Compound Interest
COI bonds also index to inflation, but EDO's 10-year term with annual capitalization builds significantly higher returns. After 10 years, the difference between rolling COI (renewed 2.5×) and EDO is several percentage points in EDO's favor.
3. Margin Above Inflation
The 2.00% margin means EDO doesn't just keep pace with inflation
4. State Treasury Guarantee
Full guarantee with no amount cap. No counterparty risk to worry about.
Early Redemption Costs
EDO's main drawback is the 10-year commitment. If you need money sooner:
- Fee: 3.00 PLN per bond (3% of face value)
- Interest loss: you forfeit interest for the current (most recent) period
- Processing time: 5 business days
How Much Do You Actually Lose?
Redemption after 3 years (from 10,000 PLN invested):
- Value with capitalization: ~11,887 PLN
- Fee: 100 × 3 PLN = 300 PLN
- Lost interest for current year: ~654 PLN
- You receive: ~10,933 PLN (profit ~933 PLN instead of ~1,887 PLN)
Redemption after 7 years:
- Value: ~14,726 PLN
- Fee: 300 PLN
- Lost interest: ~768 PLN
- You receive: ~13,658 PLN (still a solid profit)
Takeaway: The longer you hold, the smaller the percentage you lose on early redemption. After 5+ years, the fee becomes marginal.
Two rules limit the downside. The fee can never exceed the interest accrued in the current interest period — if the accrued interest is smaller, only that smaller amount is deducted and the 100 PLN principal is never touched. And series bought before September 2024 carry their own, lower fees (EDO was 2.00 PLN back then); the binding amount is always the one stated in that series' issue letter (list emisyjny).
EDO vs Other Inflation-Linked Bonds
| Feature | EDO | COI | ROS | ROD |
|---|---|---|---|---|
| Duration | 10 years | 4 years | 6 years | 12 years |
| Margin | +1.00% | +1.00% | +1.50% | +2.00% |
| Compounding | Yes | Yes | Yes | Yes |
| Availability | Everyone | Everyone | 800+ only | 800+ only |
| Redemption fee | 3.00 PLN | 2.00 PLN | 2.00 PLN | 3.00 PLN |
If you're an 800+ beneficiary, ROD with its 2.50% margin is objectively better than EDO (and ROS matches EDO's 2.00% margin on a 6-year term). For everyone else — EDO is the best long-term option available.
When EDO Is NOT the Right Choice
- You need money within 3 years — choose COI or OTS instead
- You expect deflation — at zero or negative CPI, EDO pays only the 2% margin
- You need high liquidity — a deposit or savings account is more convenient
- You qualify for ROS/ROD — family bonds have better terms
How to Buy EDO
- Register at obligacjeskarbowe.pl
- Fund your account (minimum 100 PLN)
- Select the EDO issuance from the current offer
- Place a purchase order and authorize with PIN
- Bonds appear in your account on the issue date
Detailed guide → How to Buy Polish Treasury Bonds Online
FAQ
Can EDO have a negative interest rate?
No. The minimum rate is the margin (1.00%). Even at zero or negative inflation, you receive at least 1% annually.
When is EDO interest calculated?
Interest is calculated once a year, on the anniversary of issuance. The inflation rate used is the latest published CPI figure before that anniversary.
Can I add more EDO to my existing portfolio?
Yes — each month is a new issuance. You can buy EDO regularly (e.g., 1,000 PLN monthly), building a bond ladder.
How much EDO should I hold in my portfolio?
It depends on your horizon and goals, but many financial advisors suggest 30–50% of the safe portion of your portfolio in EDO for investors with 5+ year horizons.
Are EDO bonds worth it at low inflation?
Yes — even at 2% inflation, EDO pays 4% (2% CPI + 2% margin), a comfortably positive real return. With consistently low inflation, EDO still beats deposits thanks to compounding.
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