ERI on Accumulation ETFs: Self Assessment and CGT

Excess reportable income is one of the stranger bits of UK tax admin for investors who hold accumulation ETFs or offshore funds in a general investment account. You may have taxable income even though no cash arrived in your broker account, and that same amount may also need to be reflected in your capital gains records so it is not taxed twice.

Quick FAQ on ERI and CGT base cost

Does ERI affect CGT base cost?

Yes, it can. If excess reported income arose while you owned the reporting offshore fund units, HMRC guidance allows it to be deducted when calculating the capital gain.

Do I report ERI on SA108?

Usually no. ERI is normally income reporting first, often on the Foreign Pages (SA106), while SA108 is for capital gains and losses. The ERI record still matters for SA108 support because it may affect the gain when units are sold.

What record should I keep?

Keep the fund manager or broker ERI statement, the number of units held at the reporting date, the fund distribution date, and evidence of any income already reported. Those records support the later cost-basis adjustment.

What ERI means

In everyday investor discussions, ERI usually means "excess reportable income". HMRC's offshore funds helpsheet uses the phrase "excess reported income". The idea is the same: a reporting offshore fund reports income to UK investors, and some of that income may not have been paid out as a cash distribution.

HMRC's HS265 offshore funds helpsheet says UK investors are taxed on their full share of reportable income from a reporting offshore fund, even where it has not been distributed. This is why an accumulation ETF held outside an ISA or SIPP can create Self Assessment work even without a cash dividend.

Where ERI appears on Self Assessment

ERI is usually reported as income, not as a capital gain. HMRC says income from a reporting offshore fund, including excess reported income, should be returned on the Foreign Pages (SA106) in the relevant category. Depending on the fund, that could be foreign dividends, foreign interest, property income, or another income category.

If you do not know which category applies, use the fund manager or broker statement as the source. For many equity ETFs the income is treated as dividend income, while bond or money-market funds may be different.

When ERI is treated as received

ERI is not normally reported on the date you personally notice it in a broker statement. HMRC explains that excess reported income is treated as received on the fund distribution date, which is usually six months after the last day of the fund's reporting period.

That timing matters because it determines which tax year the income belongs to. If the fund manager has not issued the report before your filing deadline, HMRC says you may need to use a best estimate and amend later when the report becomes available.

How ERI affects capital gains

ERI can also matter when you eventually sell the ETF or fund. HMRC's HS265 guidance says any excess reported income that arose while you owned the shares or units can be deducted when calculating the capital gain. The point is to avoid taxing the same amount once as income and again as capital growth.

In practical record-keeping terms, many investors treat ERI that has been reported as income as an adjustment to the holding's CGT base cost. You should keep the ERI records with your broker exports, especially if you use Section 104 pooling across several years.

What if the fund is not a reporting fund?

Be careful with non-reporting offshore funds. HMRC's offshore funds guidance says gains on disposal of a non-reporting offshore fund may be taxed as offshore income gains rather than normal capital gains. FiscalFox is built for ordinary share, fund, and ETF CGT calculations. If you are unsure whether a fund has UK reporting status throughout your holding period, check the fund manager's documents or ask a tax adviser.

Broker documents and common traps

Broker tax packs are useful, but they do not all present ERI in the same way. Some platforms include a consolidated tax certificate or ERI schedule; others leave you to look up fund-level reporting data. This is why the same ETF can feel simple inside an ISA and unexpectedly fiddly in a taxable account.

• Inside an ISA or SIPP, ERI normally does not create a personal Self Assessment entry.
• In a general investment account, ERI may need income reporting even when no cash was paid.
• When you sell, keep ERI records because they can affect the capital gain calculation.
• Do not mix ISA trades into your taxable CGT calculation.

To bring the purchase and sale history together with those fund records, follow the export guide for Vanguard, InvestEngine, Fidelity UK or Saxo. Keep the issuer's ERI statement alongside the transaction export.

Where FiscalFox fits

FiscalFox checks the ISINs you import for offshore reporting funds. Where verified issuer reports are available for every required period, it calculates the taxable fund income and the matching CGT allowable-cost addition automatically. It never treats a fund it cannot verify as having zero ERI.

FiscalFox holds verified ERI figures for more than 2,500 fund share classes, taken from the issuers' own reports, including iShares, Vanguard, Xtrackers, Invesco, HSBC, SPDR, VanEck, L&G and WisdomTree. It reconstructs units at the fund reporting date, retains the issuer report and FX evidence, and adds the same amount to the CGT allowable cost. If a fund or period is not covered yet, FiscalFox lists it in your results instead of presenting an assumed figure.

Either way the report covers the CGT calculation: disposals, allowable costs, the same-day rule, the 30-day rule, and Section 104 pooling. It produces support figures for the SA108 capital gains pages.

The downloadable Offshore Fund Income schedule keeps ERI separate from capital gains figures and links each amount to its issuer source. Confirm the applicable Self Assessment income entry before filing, especially where a fund is not classified as an equity fund.