If you’ve moved to Portugal from the UK, you’ve probably noticed that your old investment playbook doesn’t quite work here. ISA wrappers are irrelevant, UK-centric funds may trigger tax headaches, and your portfolio needs rethinking from the ground up. Portuguese government bonds — known locally as Obrigações do Tesouro — are one option that keeps coming up in conversation, and for good reason. They offer government-backed security, competitive yields, and a straightforward way to put your euros to work.

But before you rush to buy, there are important details that UK expats specifically need to understand — from how these bonds are taxed under NHR 2.0, to whether they actually make sense alongside your pension income and existing investments. This guide covers all of it.

What Are Portuguese Government Bonds?

Portuguese government bonds are debt securities issued by the Portuguese Republic through its treasury agency, IGCP (Agência de Gestão da Tesouraria e da Dívida Pública). When you buy a government bond, you’re effectively lending money to the Portuguese state. In return, you receive regular interest payments (known as coupons) and get your principal back when the bond matures.

There are several types available to investors in Portugal:

Obrigações do Tesouro (OTs) are standard fixed-rate bonds with maturities typically ranging from 2 to 30 years. These trade on the secondary market and their prices fluctuate with interest rates. They’re the most common type held by institutional and private investors alike.

Certificados de Aforro are savings certificates designed specifically for individual investors. They offer variable interest rates linked to Euribor, with loyalty bonuses that increase the longer you hold them. You can invest between €100 and €250,000 per person, and they’re purchased directly through the Portuguese treasury’s website or at CTT post offices.

Certificados do Tesouro Poupança Crescimento (CTPC) are another retail product with a fixed base rate that increases over a 7-year term, plus a potential GDP-linked bonus in the final years. These currently offer an attractive starting rate and are popular with residents looking for predictable returns.

Current Yields and How They Compare

As of early 2026, Portuguese government bond yields are sitting in an interesting position. After the European Central Bank’s rate adjustments throughout 2025, yields on 10-year Portuguese OTs are hovering around 3.0–3.5%. Shorter-term bonds offer less, while longer maturities can push towards 3.5–4.0% depending on market conditions.

For Certificados de Aforro, the variable rate currently delivers around 2.5–3.0% depending on the Euribor benchmark, with loyalty premiums adding up to 1.75% extra for bonds held to their full 10-year term. CTPCs start at around 2.5% in year one and step up to approximately 5.0% by year seven, before the GDP bonus kicks in.

To put this in context: Portuguese government bonds now sit comfortably above inflation, which has settled back to around 2.0–2.5% in the eurozone. Compare this to UK gilts, which are yielding in a similar range but carry currency risk for someone whose day-to-day spending is in euros. For an expat living in Portugal, earning a return denominated in the same currency you spend removes one significant layer of investment risk.

Tax Treatment for UK Expats in Portugal

This is where it gets important — and where many expats trip up. How your bond income is taxed depends on your residency status and whether you’re on the NHR 2.0 regime or standard Portuguese taxation.

Under standard Portuguese taxation, interest income from government bonds is subject to a flat withholding tax of 28%. This is deducted at source for Certificados de Aforro and CTPC. For OTs held through a broker, the tax treatment depends on how and where they’re held. You can opt to include bond income in your annual IRS declaration and be taxed at your marginal rate instead — which could be beneficial if your overall income puts you in a lower tax bracket.

Under NHR 2.0 (the IFICI regime), the picture changes. The new incentive regime that replaced the original NHR programme in 2024 offers a flat 20% rate on qualifying Portuguese-source employment and self-employment income, but investment income such as bond interest is generally taxed at the standard 28% flat rate. However, foreign-source investment income may benefit from exemptions or reduced rates depending on the specific double taxation agreement in play. Since Portuguese government bonds are domestic-source income, the 28% rate typically applies regardless of your NHR status.

Capital gains on bonds sold before maturity are also taxable. If you buy an OT on the secondary market and sell it at a profit, that gain is subject to the same 28% rate (or your marginal rate if you opt for aggregation). Certificados de Aforro and CTPC don’t have this issue since they’re held to maturity or redeemed at face value.

One thing worth noting: under the UK-Portugal Double Taxation Agreement, interest income is generally taxable only in the country of residence. So if you’re tax resident in Portugal, the UK should not tax your Portuguese bond income. Make sure your UK tax affairs reflect this — particularly if you’re still receiving any UK-source income that might create confusion.

How to Buy Portuguese Government Bonds

The process depends on which type of bond you’re after.

For Certificados de Aforro and CTPC, you’ll need a Portuguese NIF (tax number) and a bank account in Portugal. You can purchase them online through the AforroNet platform (www.igcp.pt) once you’ve registered, or in person at any CTT post office. The minimum investment is just €100, making them very accessible. Registration requires your NIF, identification document, and a Portuguese bank account for interest payments and redemptions.

For Obrigações do Tesouro (OTs), you’ll typically buy through a broker or bank. Most Portuguese banks offer access to government bonds through their investment platforms. You can also use international brokers like Interactive Brokers or Degiro, which list Portuguese government bonds on their fixed-income platforms. Be aware that broker fees and custody charges vary significantly — some banks charge annual custody fees of 0.1–0.3% which can eat into your returns on smaller holdings.

If you’re buying OTs on the secondary market, pay attention to the bond’s clean price versus dirty price. The dirty price includes accrued interest since the last coupon payment, which is what you’ll actually pay. This isn’t extra cost — you’ll receive the full coupon at the next payment date — but it affects your cash flow planning.

Risks You Need to Understand

Government bonds are often called “risk-free,” but that’s not entirely accurate. Here are the real risks UK expats should consider:

Interest rate risk is the biggest one for tradeable bonds (OTs). If interest rates rise after you buy, the market value of your existing bonds falls. This only matters if you need to sell before maturity — hold to maturity and you’ll get your full principal back regardless. But if your circumstances change and you need liquidity, you could face a loss.

Inflation risk is worth considering over longer time horizons. A bond paying 3.5% looks attractive when inflation is 2%, but if inflation spikes to 5% or more, your real return turns negative. Portuguese inflation has been well-behaved recently, but a decade is a long time and the eurozone has shown it can surprise.

Credit risk is low but not zero. Portugal’s credit rating has improved significantly since the sovereign debt crisis of 2011-2014. As of 2026, Portugal holds investment-grade ratings from all major agencies (BBB+ from S&P, A- from Fitch). The country has been running primary budget surpluses and its debt-to-GDP ratio, while still elevated, is on a downward trajectory. That said, past performance is no guarantee, and eurozone sovereign debt dynamics can shift.

Currency risk — or rather, the absence of it — is actually an advantage for expats living in Portugal. Unlike holding UK gilts where you’d need to convert sterling returns to euros for spending, Portuguese bonds pay out in the currency you use daily. This is a genuine structural benefit that’s easy to overlook.

Liquidity risk applies mainly to the retail products. Certificados de Aforro can be redeemed after 3 months with no penalty, but CTPC have an initial lock-in period. OTs traded on the secondary market are generally liquid, though spreads can widen during periods of market stress.

How Government Bonds Fit Into an Expat Portfolio

Portuguese government bonds shouldn’t be your entire investment strategy — but they can play a valuable role. Here’s how to think about positioning them:

As a cash alternative: Certificados de Aforro offer better returns than most Portuguese bank savings accounts, with comparable security (both are effectively government-guaranteed). If you’re holding significant cash in a Portuguese bank earning minimal interest, moving some into Certificados de Aforro is a straightforward improvement.

As the defensive part of your portfolio: If you’re drawing income from your investments — whether to supplement a pension or fund your lifestyle — a ladder of government bonds with staggered maturities can provide predictable income without the volatility of equities. A bond maturing each year gives you regular access to capital and the ability to reinvest at prevailing rates.

As a complement to your UK pension: Many UK expats in Portugal draw income from SIPP, QROPS, or defined benefit pensions. If your pension income is in sterling, Portuguese bonds provide euro-denominated diversification. This can help smooth out the impact of GBP/EUR exchange rate movements on your overall income.

What they shouldn’t replace is your growth allocation. Over the long term, equities have historically outperformed bonds by a significant margin. If you’re still 10, 15, or 20 years from needing to draw on your investments, an all-bonds portfolio would likely leave money on the table. The key is balance — and that balance depends on your age, income needs, risk tolerance, and overall financial plan.

Frequently Asked Questions

Can I buy Portuguese government bonds as a non-Portuguese citizen?

Yes. You need to be a tax resident in Portugal with a NIF and a Portuguese bank account. Your nationality doesn’t matter — the requirement is residency and a valid tax number. UK expats who have registered as residents and obtained their NIF can buy all types of Portuguese government bonds.

Are Portuguese government bonds better than UK gilts for an expat?

For someone living and spending in Portugal, Portuguese bonds have the advantage of paying returns in euros, eliminating currency conversion costs and exchange rate risk. The yields are broadly comparable. However, if you have significant future liabilities in sterling (such as UK property maintenance or supporting family in the UK), some gilt exposure might still make sense for currency matching.

What happens to my bonds if I move back to the UK?

You can continue to hold Portuguese government bonds as a non-resident, though the tax treatment changes. Portugal may withhold tax on interest payments to non-residents (typically at 28%, potentially reduced under the DTA), and you’d need to declare the income in the UK. Certificados de Aforro and CTPC may have specific residency requirements — check the current terms before assuming you can hold them indefinitely after leaving.

Should I use bonds instead of keeping money in the bank?

For money you won’t need for at least 3–12 months, Certificados de Aforro typically offer better returns than savings accounts with similar security. For longer time horizons, CTPC or OTs may be more attractive. However, always keep an emergency fund in an easily accessible bank account — bonds, even liquid ones, aren’t instant-access in the way a current account is.

What to Do Next

Portuguese government bonds are worth understanding as part of your broader financial plan in Portugal. Whether they make sense for you depends on your income sources, tax position, time horizon, and how your existing investments are structured.

If you’d like to discuss how Portuguese government bonds could fit alongside your UK pension, investments, and tax planning, we’re here to help. At Arthur Browns, we specialise in helping UK expats in Portugal make informed financial decisions — and getting the mix right between safety, income, and growth is exactly what we do.

Get in touch today for a no-obligation conversation about your investment strategy. You can reach us at info@arthurbrowns.co.uk or call +351 289 358 042.

Contact us