Inflation-Linked Bonds (EDO) — How Do They Work?

Quick Answer

EDO bonds are 10-year Polish Treasury securities indexed to CPI inflation. In year 1, they pay a fixed promotional rate (~6.80% in March 2026). From year 2 onwards: CPI inflation + 1.00% margin. Interest is capitalized annually (compound interest), making EDO the best inflation hedge available to individual investors in Poland.

How EDO Bonds Work — The Mechanics

Year 1 — Fixed Promotional Rate

In the first year, EDO pays a fixed rate announced at issuance. For March 2026 it's 6.80% per annum.

Example: You buy 100 bonds (10,000 PLN).

• Interest after year 1: 10,000 × 6.80% = 680 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) + 1.00%

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.

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

Why 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 1.00% margin means EDO doesn't just keep pace with inflation — it beats it. This is real protection, not merely nominal.

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: 2.00 PLN per bond (2% 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 × 2 PLN = 200 PLN
• Lost interest for current year: ~654 PLN
• You receive: ~11,033 PLN (profit ~1,033 PLN instead of ~1,887 PLN)

Redemption after 7 years:

• Value: ~14,726 PLN
• Fee: 200 PLN
• Lost interest: ~768 PLN
• You receive: ~13,758 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.

EDO vs Other Inflation-Linked Bonds

If you're an 800+ beneficiary, ROD with its 2.00% margin is objectively better than EDO. For everyone else — EDO is the best long-term option available.

When EDO Is NOT the Right Choice

1. You need money within 3 years — choose COI or OTS instead
2. You expect deflation — at negative inflation, EDO pays only 1% (the margin)
3. You need high liquidity — a deposit or savings account is more convenient
4. You qualify for ROS/ROD — family bonds have better terms

How to Buy EDO

1. Register at obligacjeskarbowe.pl
2. Fund your account (minimum 100 PLN)
3. Select the EDO issuance from the current offer
4. Place a purchase order and authorize with PIN
5. 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 3% (2% + 1% margin), which is a real positive return. With consistently low inflation, EDO still beats deposits thanks to compounding.

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