W-8BEN for investors in Slovenia: how 15 % tax on US dividends disappears forever
Without a W-8BEN form, the US withholds 30 % instead of 15 % from your dividends. FURS credits you only 15 % — the difference is not deductible, not recoverable through eDavki, and simply lost. Here is the calculation, how to check it and how to fix it.
Most investors in Slovenia know that foreign dividends must be reported on the Doh-Div form and that foreign tax can be claimed as a credit. Fewer know that this credit has an upper limit — and that every euro of tax above it is not deferred, but permanently lost.
The most common reason for this is a missing or expired W-8BEN form with your broker.
The short answer
The calculation on €1,000 of gross US dividends
| With W-8BEN filed | Without W-8BEN | |
|---|---|---|
| Gross dividend | €1,000.00 | €1,000.00 |
| Tax withheld in the US | €150.00 (15 %) | €300.00 (30 %) |
| Slovenian income tax (25 %) | €250.00 | €250.00 |
| Foreign tax credit granted by FURS | €150.00 | €150.00 |
| Additional payment in Slovenia | €100.00 | €100.00 |
| Total tax paid | €250.00 (25 %) | €400.00 (40 %) |
The fourth row is the key one. The credit does not increase from €150 to €300 just because more was withheld from you. The US treaty gives the US the right to tax portfolio dividends at 15 %, so 15 % is also all that Slovenia recognises as a credit. The remaining €150 is not a tax credit, is not carried forward to the following year, and is not a line item in eDavki (the tax authority’s e-filing portal) — there is simply no field for it in the return.
For a portfolio with €5,000 of annual US dividends, that means €750 per year thrown away.
Why this happens even if you “filled everything in when you opened the account”
Precisely because it is a one-off step at registration, which is easy to overlook or lose:
- The W-8BEN expires. It is valid until the end of the third calendar year after signing. Signing in 2022 means expiry on 31 December 2025 — and the broker quietly switches you back to 30 %. This is by far the most common case.
- A missing tax number. If you did not enter your Slovenian tax number when filing (the “Foreign TIN” field), the form is not valid for the reduced rate, even though it has been “filed”.
- Wrong tax residency. If another country is listed on the account, or the field is empty, there is no reduced rate.
- Moving house or transferring the account to a different broker entity often requires a new form.
Where to check this with your broker
| Broker | Where to find the W-8BEN |
|---|---|
| Interactive Brokers | Client Portal → Settings → Account Settings → Tax Forms (also shows the expiry date) |
| Trading 212 | Settings → Tax residency / Tax forms |
| Revolut | Investing → Account settings → Tax documents |
| eToro | Settings → Account → Tax information |
| Trade Republic | Profile → Tax settings (the German entity handles the W-8BEN in the background) |
If you cannot find the rate in the settings, you will always find it on the statement: compare the gross dividend and the tax withheld.
What if 30 % has been withheld from me for years?
Here is the bad news: you cannot fix this through eDavki. Slovenia did not collect that tax and cannot refund it either. There are two options:
- A refund at source (IRS). You claim the over-withheld tax directly from the US tax administration with form 1040-NR and the 1042-S statement issued by your broker. The procedure is in English, paper-based and takes months; the deadline is roughly three years from the withholding. It is not worth it for a few tens of euros, but it may be for a few hundred.
- Fix it going forward. File a new W-8BEN immediately. From the next dividend onwards you will be at 15 % — which, for most portfolios, is the only realistic move.
Despite the uncorrectable past: you must still file your past Doh-Div return correctly. You claim what you are entitled to (15 %), not 30 %. If you entered the full 30 % in Doh-Div, the return is wrong and it makes sense to correct it with a voluntary disclosure (samoprijava).
The trap that W-8BEN does not solve: Irish ETFs
If you hold an ETF domiciled in Ireland (the ISIN starts with IE, e.g. VWCE, VUAA, CSPX), a W-8BEN does not help here and is not needed either:
- The tax is withheld inside the fund (the fund pays 15 % to the US on the US dividends it receives), not at your level.
- Ireland does not withhold tax on distributions to investors in Slovenia (0 %).
- Therefore, with a distributing Irish ETF there is no foreign tax to claim — you report the gross distribution and pay the Slovenian 25 %.
- With an accumulating Irish ETF there is no distribution at all: dividends are reinvested inside the fund, and a taxable event arises for you only on sale (Doh-KDVP).
This is an important distinction: the 30 % problem concerns direct ownership of US shares and US ETFs (ISIN US…), not Irish funds.
Plutko calculates how much you have lost
This calculation is not something you want to do by hand across hundreds of payouts in multiple currencies. From your statement, Plutko calculates for each individual dividend:
- the gross amount and the foreign tax actually withheld, both converted to EUR at the Banka Slovenije (Bank of Slovenia) rate on the payout date,
- the upper limit of the credit under the treaty with the source country,
- the difference — that is, the amount exceeding the recognised credit.
In Statistics you then see the total amount of over-withheld tax, broken down by country and by year, together with a warning when the dividends are US dividends and the W-8BEN is therefore the actual cause. The same information also appears in the report preview, before you pay for anything.
At the same time, Plutko makes sure that the Doh-Div XML claims the correct — treaty-permitted — amount of foreign tax, so that the return is not rejected because of an excessive claim.
Check your dividends with Plutko
Sources: Convention between the Republic of Slovenia and the USA for the avoidance of double taxation (Article 10 — dividends); ZDoh-2 (credit for tax paid abroad); IRS, Instructions for Form W-8BEN (validity until the end of the third calendar year after signing) and Form 1040-NR. This article reflects the position as at 14 July 2026 and is not tax advice. For specific decisions, consult a tax adviser.
Frequently asked questions
What is a W-8BEN and why do I need one?
It is the form through which you confirm to your broker that you are not a US taxpayer and claim the more favourable rate under the double-taxation treaty. Without it, the US withholds 30 % on dividends instead of 15 %.
What does it cost me not to have one?
On a US dividend your total effective burden is 40 % instead of 25 %. Slovenia credits foreign tax only up to the treaty rate — generally 15 % — and the remaining 15 % has to be reclaimed from the US.
How long is it valid?
Generally three years from signature, after which it must be renewed. If it lapses, withholding quietly reverts to 30 %.
Where do I complete it?
At your broker, usually under tax-status settings. It takes a few minutes and requires nothing from FURS.
Does a W-8BEN change what I report in Slovenia?
Not the obligation, only the amount. You always report the gross dividend and enter the foreign withholding separately as a credit. With a W-8BEN that withholding is 15 % and is credited in full.