French OAT 2026 Investing Guide — Yields, How to Buy, PEA, Tax

TL;DR

French OAT (Obligations Assimilables du Trésor) are the second-largest Eurozone government bond market after Bunds, with 2026 yields around 2.7% on the 2-year, 3.0% on the 10-year and 3.3% on the 30-year — roughly 25 basis points above equivalent German Bunds. The Agence France Trésor (AFT) operates a digital "AFT Particuliers" portal where French residents can buy newly-issued OAT directly, but for most EU investors the practical route is broker-based secondary trading or UCITS ETFs. The flagship French-focused ETF is Amundi Govies France 1-3 UCITS (AGOF), with broader Eurozone wrappers (IEAG, IEGM) holding ~21% OAT proportionally. PEA (Plan d'Épargne en Actions) does NOT cover bonds — it is an equity-only wrapper. French residents face 30% PFU on bond income; cross-border EU investors face their own residency tax.

Why French OAT matter in 2026

OAT — Obligations Assimilables du Trésor — are the standard fixed-rate bonds issued by the French Republic through the Agence France Trésor. France carries credit ratings of AA from S&P, AA- from Fitch and Aa3 from Moody's — one notch below Germany on most scales but still squarely in the AA tier. The OAT-Bund spread, traditionally 5-15 basis points, widened to ~25 bps through 2024-2025 as French fiscal concerns and political instability priced in.

The OAT market matters for three reasons. First, it is the most liquid Eurozone sovereign curve after Bunds, with deep secondary market trading in every benchmark maturity. Second, France issues across the longest maturity range of any Eurozone sovereign, including 50-year and even occasional 100-year OAT. Third, French OAT-€i (inflation-linked) and OAT-i issues form the bulk of Eurozone inflation-linked benchmark indices, making OAT the dominant component of any "EUR linker" ETF.

This guide walks through how AFT issues OAT, what current yields look like, how French residents and other EU investors can buy, and the tax structure including the PEA wrapper question.

French OAT market overview

The Agence France Trésor is the French Treasury's debt management agency under the Ministry of Economy & Finance (MEF). Total negotiable OAT debt outstanding was approximately €2.5 trillion at end-2025, with annual gross issuance around €290-310 billion.

Instrument types issued:

• BTF (Bons du Trésor à Taux Fixe et à Intérêts Précomptés): Zero-coupon Treasury bills with maturities of 3, 6 and 12 months. Auctioned weekly on Mondays.
• OAT (Obligations Assimilables du Trésor): Fixed-rate bonds with maturities from 2 to 50 years. Annual coupons (matching the Bund convention, different from US Treasury semi-annual).
• OAT-€i (Obligations Assimilables du Trésor indexées sur l'inflation européenne): Inflation-linked OAT tied to Eurozone HICP excluding tobacco. Tenors 5 to 30 years.
• OAT-i: Inflation-linked OAT tied to French CPI (legacy series, less actively issued than OAT-€i).
• Green OAT: Sovereign green bonds, first issued in 2017, with proceeds tagged for environmental spending. Trade alongside conventional OAT on a slightly tighter spread.

Auctions follow a published calendar — typically the first and third Thursdays of each month for OAT, weekly for BTF. AFT operates through a network of Spécialistes en Valeurs du Trésor (SVT, primary dealers) — currently 16 banks including BNP Paribas, Société Générale, Crédit Agricole, JPMorgan, Goldman Sachs.

Current yields and the curve

Q1 2026 snapshot of the OAT curve:

• 3-month BTF: ~2.30%
• 2-year OAT: ~2.70%
• 5-year OAT: ~2.85%
• 10-year OAT: ~3.00%
• 20-year OAT: ~3.20%
• 30-year OAT: ~3.30%
• 10-year OAT-€i real yield: ~1.10%

The OAT curve shows positive term premium, with about 60 basis points between 2-year and 30-year. Compared to Bunds:

• vs Bunds: OAT trade ~25 bps above Bunds at the 10-year, the widest sustained OAT-Bund spread since the 2012 sovereign crisis. Drivers: fiscal slippage versus EU 3% deficit target, political instability and reduced ECB QE absorption.
• vs BTP (Italy): OAT yield ~50 bps below BTP at the 10-year — France remains comfortably in the "core" Eurozone.
• vs Spanish Bonos: OAT roughly in line at the 10-year.

Yields change with central bank decisions, verify before buying.

How to buy French OAT from Europe

Direct purchase — AFT Particuliers and brokers

The AFT operates "AFT Particuliers", a digital portal allowing French residents to buy OAT in primary auctions. Minimum purchase is €1,000 face value. Settlement and custody are handled through partner banks and online brokers.

Beyond the AFT portal, French residents and other Eurozone retail investors can buy OAT in the secondary market through:

• Boursorama, Fortuneo, BforBank, Saxo Banque France — French online brokers with bond trading sections
• Interactive Brokers (IBKR) — the most reliable cross-border path for non-French EU investors, with OAT settling through Euroclear France T+2

Most other European retail platforms (XTB, eToro, Trade Republic, Degiro) do not offer individual OAT trading and steer users toward Eurozone government bond ETFs.

Indirect purchase — UCITS ETFs

ETFs are the practical route for cross-border European retail. Several UCITS ETFs hold OAT either as the dominant exposure or as part of a Eurozone basket.

Best ETFs for OAT exposure

Pure-France OAT ETFs

• Amundi Govies France 1-3 UCITS (AGOF, FR0010754127): ~€350M AUM, 0.14% TER. Pure short-end French OAT exposure.
• Amundi Govies France Broad UCITS (FR0010754135): Whole-curve French OAT, higher duration.
• Lyxor 5-7Y EuroMTS Investment Grade UCITS (FR0010823369): Predominantly French OAT in the 5-7 year segment, with some Bund and other core exposure.

Broad Eurozone government ETFs (OAT inside)

• iShares Core EUR Govt Bond UCITS (IEAG / SEGA, IE00B4WXJJ64): ~€5B AUM, 0.07% TER. OAT comprise approximately 21% of the basket alongside Bunds, BTP, Bonos and others.
• iShares EUR Govt Bond 7-10yr UCITS (IEGM / IBGM, IE00B3VWN179): ~€2.5B AUM, 0.07% TER. Same Eurozone composition focused on 7-10 year maturities.
• Xtrackers II Eurozone Government Bond UCITS (XGLE, LU0290355717): ~€2B AUM, 0.15% TER, similar mandate.

Inflation-linked

• iShares € Inflation Linked Government Bond UCITS (IBCI / SXRI, IE00B0M62X26): ~€1.5B AUM, 0.09% TER. Heavily weighted toward French OAT-€i and German Bund-€i.

The choice between pure-France and Eurozone-aggregate ETFs depends on whether you want specifically French sovereign credit risk or are happy diversifying across the Eurozone for slightly higher blended yield.

Tax treatment per investor country

French residents: This is the most important tax case for OAT. Three notes:

1. Standard regime — 30% PFU: Bond income (coupons) and capital gains on bond sales taxed at the 30% Prélèvement Forfaitaire Unique (12.8% income tax + 17.2% social charges). Investors can opt for the progressive income tax scale instead if it produces a lower bill — usually only for low-income households.
2. PEA wrapper — NOT applicable: The PEA (Plan d'Épargne en Actions) is an equity-only wrapper. Bonds, bond ETFs and bond funds are NOT eligible. This is a common misunderstanding among new investors expecting PEA to shelter their entire portfolio.
3. Assurance-Vie wrapper — applicable: Bond holdings inside Assurance-Vie contracts benefit from preferential taxation, especially after 8 years of contract duration. After 8 years, gains up to €4,600 (single) or €9,200 (couple) are tax-exempt annually, with a reduced 7.5% rate above that threshold for the first €150,000.

Polish residents: 19% Belka rate on coupons and ETF capital gains, reportable via PIT-38.

German residents: 25% Abgeltungsteuer + Soli + church tax. Vorabpauschale applies to accumulating OAT ETFs.

UK residents: 20%/40%/45% Income Tax on coupons above the Personal Savings Allowance. CGT at 10%/20% on ETF gains above £3,000. ISA wrapper makes everything tax-free.

Italian residents: OAT qualify for the 12.5% reduced rate on Italian residents' tax returns — France is on Italy's "white list". This is a meaningful advantage versus US Treasury or non-qualifying foreign bond holdings (taxed at 26%).

Real-world example — €12,000 OAT allocation

Pierre, 41, a doctor in Lyon. He builds a Eurozone bond core within an Assurance-Vie wrapper:

• €5,000 in IEGM (iShares EUR Govt Bond 7-10yr) — broad Eurozone exposure including 21% OAT, ~3.1% YTM
• €4,000 in AGOF (Amundi Govies France 1-3) — pure short-end French exposure, ~2.8% YTM
• €3,000 in IBCI (iShares € Inflation Linked Govt Bond) — heavily OAT-€i weighted, ~1.1% real + HICP

Blended yield: ~2.6% before tax. Inside Assurance-Vie after 8 years, the first €4,600 of annual gains is tax-free; above that, the 7.5% reduced rate applies (vs 30% PFU outside the wrapper). The wrapper effectively saves about 22 percentage points of tax on growth above the threshold — meaningful on a multi-year horizon.

Freenance tracks bond ladder positions, calculates blended duration, computes weighted YTM across UCITS holdings and applies the correct tax rate per residency — useful when an EU portfolio mixes French OAT with Bunds, BTP and US Treasuries.

Step-by-step — buying an OAT ETF from outside France

For a non-French EU investor wanting French sovereign exposure, here is a concrete walkthrough using a major European broker:

1. Pick a broker that supports the OAT ETF. Trade Republic, Scalable Capital, XTB and Degiro all list AGOF (Amundi Govies France 1-3) and the broader IEAG (iShares Core EUR Govt Bond). Interactive Brokers offers all variants plus direct OAT secondary access.
2. Verify EUR pricing. Both AGOF and IEAG trade in EUR on Euronext Paris (AGOF) and Xetra/Borsa Italiana (IEAG). No FX conversion needed for Eurozone investors.
3. Place a limit order. Bond ETF spreads can widen during volatility. AGOF typical bid-ask is 5-10 cents on a ~€100 share; IEAG spreads ~5 cents on a ~€135 share. A limit order at mid-price avoids paying the spread.
4. Settle T+2. Shares appear in the brokerage account two business days after execution. Distributing share classes pay coupons quarterly or semi-annually; accumulating share classes reinvest internally.
5. Tax statements. Most EU brokers provide annual tax summaries. For Polish residents the PIT-8C document simplifies PIT-38 filing. For French residents holding through Boursorama or Fortuneo, the IFU (Imprimé Fiscal Unique) summarises bond income.

Distributing vs accumulating OAT ETFs

Most major Eurozone government ETFs offer both share classes:

• Distributing: Pays coupon income as cash quarterly or semi-annually. Useful for retirees needing income or for Assurance-Vie wrappers where distribution timing is tax-irrelevant.
• Accumulating: Reinvests coupons inside the fund automatically. More tax-efficient for long-term compounding outside a wrapper, fewer manual reinvestment trades.

For French residents using Assurance-Vie, distribution timing is largely irrelevant — both share classes deliver similar after-tax outcomes within the wrapper. Outside a wrapper, accumulating provides simpler operations for long-term holders, with the tradeoff that the realised tax event happens only on sale rather than spread across years. Some French investors with progressive-rate elections prefer distributing share classes to smooth annual income above or below tax bracket thresholds.

A practical note on PEA misunderstanding: many French retail investors discover only after opening a PEA that bond exposure is excluded — this is one of the more common questions on French personal finance forums. The intended path for tax-sheltered bond holdings in France remains Assurance-Vie, with the additional benefit that contracts opened more than 8 years before withdrawal qualify for the lower 7.5% rate above the annual exemption thresholds. PER (Plan d'Épargne Retraite) is another option for retirement-focused holders, with bond ETFs eligible alongside equity funds inside the wrapper.

Risks of OAT

• Interest rate risk. A 1% rise in OAT yields drops a 7-10 year ETF by ~7%. Government bonds carry interest rate risk even though credit risk is minimal for major sovereigns.
• Fiscal slippage risk. France's debt-to-GDP ratio crossed 110% in 2024 and the budget deficit ran above the 3% EU target. Continued fiscal slippage could pressure ratings and widen the OAT-Bund spread.
• Political instability. The 2024 snap elections created uncertainty about budget direction. OAT spreads versus Bunds widened by ~15 bps in the immediate aftermath before stabilising.
• Inflation risk. A nominal 3.0% yield erodes to ~0% real if Eurozone HICP runs at 3%. OAT-€i and IBCI provide inflation protection.
• Liquidity risk in stress. While normally one of the deepest sovereign markets, OAT bid-offer spreads widened materially during the 2024 political stress episode.

FAQ

Can I use AFT Particuliers as a non-French EU resident?

The AFT Particuliers portal is targeted at French residents. Non-French EU buyers should use Interactive Brokers or another broker offering OAT secondary-market access.

Can I hold OAT inside a PEA?

No. The PEA (Plan d'Épargne en Actions) is restricted to EU equities and equity funds. Bonds, bond ETFs and money-market funds are NOT eligible. Use Assurance-Vie for tax-sheltered bond holdings instead.

What's the minimum face value for an individual OAT?

€1,000 in primary auction via AFT Particuliers. In secondary markets, most OAT trade in €1,000 lots, though some bench OAT trade in larger institutional lots only.

Why has the OAT-Bund spread widened?

Three drivers since 2024: French fiscal slippage above the EU 3% deficit target, political instability following snap elections, and reduced ECB Bund-purchase support as quantitative tightening progresses. Many investors consider current spread levels close to fair value given fundamentals.

Are Green OAT a different instrument from regular OAT?

Same legal structure and credit risk — the difference is that proceeds are earmarked for environmentally beneficial spending. Green OAT typically trade at a small "greenium" of 1-3 basis points below conventional OAT of equivalent maturity.

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