Term Deposit vs Treasury Bonds in Poland - Which Pays More in 2026

Term Deposit vs Treasury Bonds in Poland — Which Pays More in 2026

If you have spare PLN sitting in a Polish bank account, you've probably considered two classic safe-haven options: a bank term deposit (lokata) or Polish Treasury bonds (obligacje skarbowe). Both are low-risk, but they differ significantly in returns, flexibility, and inflation protection. Let's break it down for 2026.

How Polish Term Deposits Work

A term deposit (lokata) is a fixed-term agreement with your bank. You lock in a sum for 3, 6, or 12 months at a guaranteed interest rate. At maturity, you receive your capital plus interest minus 19% Belka tax (podatek Belki).

Pros of term deposits:

• Simple — open online in minutes at mBank, ING, PKO, or any Polish bank
• BFG guarantee up to EUR 100,000 per bank
• Fixed rate — you know exactly what you'll earn
• Short terms — money isn't locked for years
• Promotional rates for new customers can reach 6-8%

Cons of term deposits:

• Standard rates in 2026: 4-6% (promotional rates expire quickly)
• Breaking the deposit early = losing all interest
• 19% Belka tax on gains
• No inflation protection — if inflation rises, your real return drops

How Polish Treasury Bonds Work

Treasury bonds (obligacje skarbowe) are debt instruments issued by the Polish State Treasury. You buy them directly at obligacjeskarbowe.pl with a minimum of 100 PLN per bond.

Available types in 2026:

• OTS (3-month): fixed rate ~5.80%
• DOS (2-year): fixed rate ~5.75%
• TOZ (3-year): variable, based on WIBOR 6M
• COI (4-year): inflation-indexed + 1.00% margin
• EDO (10-year): inflation-indexed + 1.25% margin

Pros of treasury bonds:

• Backed by the Polish State Treasury — maximum safety
• Inflation protection with COI and EDO series
• Higher yields than most term deposits
• Can be purchased within IKE (no Belka tax!)

Cons of treasury bonds:

• Early redemption fee: 0.50-2.00 PLN per bond
• Longer maturities (2-10 years for best rates)
• Interest typically paid annually or at maturity

Head-to-Head: 50,000 PLN for 12 Months

Term deposit (5.5%, 12 months):

• Gross interest: 2,750 PLN
• Belka tax (19%): 522.50 PLN
• Net profit: 2,227.50 PLN
• Real return (4% inflation): ~1.5%

OTS treasury bonds (3-month, rolled 4x, ~5.80%):

• Gross interest: ~2,900 PLN
• Belka tax (19%): 551 PLN
• Net profit: 2,349 PLN
• Real return: ~1.8%

COI treasury bonds (4-year, inflation-indexed):

• Year 1: 5.70% (inaugural fixed rate)
• Years 2-4: inflation + 1.00% margin
• At 4% inflation: ~5.00% in subsequent years
• Net profit after 4 years (stable inflation): ~8,800 PLN

The inflation-indexed bonds clearly win for longer horizons — especially if inflation surprises to the upside.

The IKE Advantage

Here's the game-changer most people overlook: you can buy Polish Treasury bonds within an IKE (Individual Retirement Account). This eliminates the 19% Belka tax entirely.

Example: 50,000 PLN in EDO bonds on IKE (10 years, inflation + 1.25%):

• At 4% average inflation: ~6,375 PLN/year in interest
• Over 10 years: ~63,750 PLN gross = net (0% tax on IKE)
• Without IKE: ~51,600 PLN net (after 19% Belka)
• Tax savings: ~12,150 PLN

That's over 12,000 PLN saved just by using the IKE wrapper.

When to Choose a Term Deposit

• You need the money back in 3-6 months
• You want to take advantage of a new-customer promotional rate
• You value simplicity and instant access to your bank
• You already hold treasury bonds and want diversification

When to Choose Treasury Bonds

• You're saving for 2+ years
• You want inflation protection (COI, EDO)
• You plan to use an IKE account (zero tax)
• You want the highest possible safety guarantee
• You prefer predictable, inflation-beating returns

The Combined Strategy

Smart savers in Poland use both:

• Emergency fund (3-6 months of expenses): term deposit or savings account — liquidity matters most
• Medium-term savings (1-3 years): DOS or TOZ bonds
• Long-term savings (4-10 years): COI or EDO bonds, ideally within IKE

Example allocation for 100,000 PLN:

• 30,000 PLN in a 6-month term deposit (emergency layer)
• 30,000 PLN in DOS bonds (2-year horizon)
• 40,000 PLN in EDO bonds on IKE (retirement)

Track Everything in One Dashboard

When your money is spread across bank deposits and treasury bonds, it's easy to lose the big picture. Freenance connects your Polish bank accounts (mBank, ING, PKO) and lets you add treasury bond holdings, showing your complete net worth and Financial Freedom Runway — how many months you could live without working — in a single dashboard.

Bottom Line

In 2026, Polish Treasury bonds beat term deposits in most scenarios — especially inflation-indexed COI and EDO bonds purchased within an IKE. Term deposits win only on short-term flexibility and promotional rates.

Key differences at a glance:

• Interest rates: treasury bonds > deposits (usually)
• Safety: both extremely safe (BFG vs State Treasury)
• Flexibility: deposits > bonds
• Inflation protection: only COI/EDO bonds
• Tax optimization: bonds on IKE = 0% tax

Whatever you choose, the worst option is leaving money in a 0% current account. Even the simplest 3-month OTS bonds or a basic term deposit will outpace inflation eating your capital.