The currency-erosion trap — why your +159% back home is a EUR loss
A EUR-earner's big nominal return at home is often a real EUR loss. The worked PKR fixed-deposit example (+159% in rupees, -7% in euros), the -9.5%/yr PKR slide, India's $1M NRO cap that excludes Pakistani and Bangladeshi nationals, and the one case where investing home is still rational.
+159% at home. Minus 7% in euros.
It's the most expensive illusion an immigrant investor falls for: a home-country return that looks huge in rupees or takas and quietly destroys value once you measure it in the euros you actually earn and spend. Here's the maths, with real numbers.
a +159% PKR fixed deposit, measured in EUR (2015→2025)
−7%
One million rupees in a 10%/year Pakistani fixed deposit grew to +159% over a decade. In euros — the currency you live in — the same money went from €8,772 to €8,144. You earned a fortune in rupees and lost money in euros.
The currencies keep sliding against the euro
The reason home returns evaporate is structural: the currencies depreciate against the euro year after year. That drift is the tax nobody quotes you.
| Provider | Avg annual slide vs EUR | What it does to a 10-year return |
|---|---|---|
Pakistani rupee (PKR) | −9.5% / year | Wipes out almost any local interest rate |
Bangladeshi taka (BDT) | −4.8% / year | Halves the real return |
Indian rupee (INR) | −3.8% / year | A steady, compounding drag |
- Avg annual slide vs EUR
- −9.5% / year
- What it does to a 10-year return
- Wipes out almost any local interest rate
- Avg annual slide vs EUR
- −4.8% / year
- What it does to a 10-year return
- Halves the real return
- Avg annual slide vs EUR
- −3.8% / year
- What it does to a 10-year return
- A steady, compounding drag
A 10%/year rupee return sounds unbeatable until you subtract a 9.5%/year currency slide — the real EUR return is roughly nothing, and after a bad FX year, negative.
The worked example, step by step
Start: 1,000,000 PKR in 2015
At 2015 exchange rates that was about €8,772.
Invest at 10%/year in a Pakistani fixed deposit
A perfectly ordinary, "safe" home-country FD.
10 years later: +159% in rupees
The rupee balance more than doubled — a genuinely large nominal gain.
Convert back to euros: €8,144
Because the PKR fell ~9.5%/year against the EUR, that big rupee pile is worth €8,144 — LESS than the €8,772 you started with. A −7% real EUR result.
The same euros, invested in Germany
EUR ETF outcome vs the home fixed deposit
2×+
This isn't a story about picking hot stocks. It's a plain index ETF versus a 'safe' home deposit — and the ETF wins by more than 2x purely because it's denominated in the currency you actually live in.
Even if you win, getting it out is hard
Say your home investment does beat the odds. Repatriating the money to Germany runs into friction that quietly traps capital:
| Provider | Repatriation friction | Who it hits |
|---|---|---|
India — NRO repatriation cap | Limited to USD 1,000,000 per year, and each transfer needs Form 15CA + a chartered accountant's Form 15CB | Indian nationals with NRO accounts |
Pakistan / Bangladesh nationals | EXCLUDED from that Indian NRO facility entirely — different, often tighter regimes | Pakistani and Bangladeshi investors |
FX spread on the way out | You cross the depreciated exchange rate again to convert back to EUR | Everyone |
- Repatriation friction
- Limited to USD 1,000,000 per year, and each transfer needs Form 15CA + a chartered accountant's Form 15CB
- Who it hits
- Indian nationals with NRO accounts
- Repatriation friction
- EXCLUDED from that Indian NRO facility entirely — different, often tighter regimes
- Who it hits
- Pakistani and Bangladeshi investors
- Repatriation friction
- You cross the depreciated exchange rate again to convert back to EUR
- Who it hits
- Everyone
Money that is "up 159%" but stuck behind a repatriation cap, a paperwork wall, or a collapsing exchange rate is not really yours to spend in Germany. Liquidity and currency are part of the return, not footnotes to it.
The honest nuance: when investing home IS rational
There's a real exception, and it matters: if you genuinely intend to retire in your home country, investing there can be rational — it's a natural currency hedge. Your future costs (a house, healthcare, daily life) will be in rupees or takas, so holding assets in that currency matches your future liabilities. The erosion trap bites people who earn, spend and will retire in euros but invest at home out of familiarity. Match your investments to the currency you'll actually spend.
Decide with the numbers
Ask where you'll actually retire
Euros forever → invest in euros. Home forever → a home allocation is a hedge.
Subtract the currency slide from every home rate
A 10% FD minus a 9.5% slide is not a 10% return.
Price in repatriation friction
Caps, forms and FX spreads all shrink what reaches Germany.
Run your own numbers
Your currency, your rate, your horizon.
See the full picture in the real-return calculator, then read where immigrants should invest for the decision framework.
Where the numbers come from
Currency depreciation rates are long-run averages of PKR, INR and BDT versus the EUR; the worked FD example uses 2015-2025 rates and a 10% nominal PKR return.ECB reference rates India's NRO repatriation cap (USD 1M/year, Form 15CA/15CB) is set by the Reserve Bank of India; Pakistani and Bangladeshi nationals are outside that facility.Reserve Bank of India This is educational, not investment advice. Figures verified 2026-07-18.
Last updated: 2026-07-18