Anyone who has looked at a fund factsheet has probably come across three overlapping abbreviations — OCF, TER, and AMC — often used slightly inconsistently, and sometimes side by side, seemingly describing similar things. They are related but not identical, and understanding the difference helps avoid comparing two funds on figures that don't actually mean the same thing.
AMC — the Annual Management Charge
The AMC is the fee charged by the fund manager specifically for managing the fund's investments — essentially, the fund manager's own fee for the job of running the portfolio. Historically, the AMC was the headline figure most commonly quoted to investors, before regulatory changes required a more complete cost figure to be disclosed.
Why the AMC alone is an incomplete picture
The AMC does not include the other costs of running a fund — administration, custody, audit, legal, and regulatory fees — which are real costs still borne by the fund's investors even though they're separate from the manager's own fee. A fund quoting only its AMC can look cheaper than its true all-in running cost.
TER — the Total Expense Ratio
The TER was an earlier attempt to capture a fund's full running costs in one number, combining the AMC with the other operating expenses mentioned above. It was widely used across Europe before being formally replaced, for UCITS funds (a common European fund structure used by many UK-available funds), by the Ongoing Charges Figure.
Is the TER still used?
The term still appears occasionally, sometimes used loosely (and technically incorrectly) as an informal synonym for the OCF, and sometimes still appearing on older documentation or on funds domiciled outside the UCITS framework. In most current UK retail fund literature, the OCF has effectively taken over the TER's role as the standard headline cost figure.
OCF — the Ongoing Charges Figure
The OCF is the current standard, regulated cost disclosure figure used across UK and EU retail fund documentation, required to appear in a fund's Key Investor Information Document (or equivalent). It is calculated on a broadly standardised basis across fund providers, which makes it the most reliable figure for comparing the running costs of two different funds. The OCF is explained in full in the companion article dedicated to it, but in short, it captures the AMC plus the fund's other ongoing operating expenses, expressed as a single annual percentage.
How the three terms relate to each other
| Term | What it captures | Current status in UK fund documentation |
|---|---|---|
| AMC | Fund manager's own management fee only | Still quoted informally, but not the standard headline figure |
| TER | AMC plus other running costs (an earlier all-in measure) | Largely superseded by the OCF, though the term still appears occasionally |
| OCF | AMC plus other running costs (current standardised measure) | The current standard figure used in UK/EU regulated fund disclosures |
In practice, for most modern UK funds, the OCF and what would previously have been called the TER are very similar or identical in what they capture — the OCF is essentially the TER's regulatory successor, calculated on a more standardised basis across providers.
What none of these three figures include
It's worth being clear that none of AMC, TER, or OCF capture everything an investor might pay in connection with holding a fund. In particular:
- Portfolio transaction costs — the dealing charges and stamp duty incurred when the fund itself buys and sells its underlying holdings — are excluded from all three figures and disclosed separately (see the companion article on transaction costs and stamp duty).
- Performance fees, charged by some actively managed funds when they beat a stated benchmark by a set margin, are generally disclosed separately rather than folded into the OCF.
- Platform charges are entirely separate from all fund-level figures, since they're charged by the platform holding the fund, not by the fund itself.
A worked hypothetical example
Suppose a hypothetical fund discloses the following figures in its documentation:
| Figure | Value |
|---|---|
| AMC | 0.60% |
| Other operating expenses | 0.10% |
| OCF (AMC + other operating expenses) | 0.70% |
| Portfolio transaction costs (disclosed separately) | 0.08% |
An investor who only looks at the AMC (0.60%) would understate the fund's actual ongoing running cost by 0.10 percentage points, and would additionally miss the separately disclosed transaction costs, meaning the fuller picture of the fund's total annual cost is closer to 0.78% once everything is accounted for. This example is illustrative only.
A brief history of why the terminology changed
Before EU-wide fund disclosure rules were harmonised, different fund providers across Europe used different measures and different methodologies to describe their costs, making genuine like-for-like comparison difficult for investors. The TER was introduced as an industry attempt to standardise this, followed later by the more tightly regulated OCF requirement under the UCITS Key Investor Information Document framework, which specified a more consistent calculation methodology across providers and jurisdictions. This history explains why an investor might occasionally still encounter the older terminology on historical documents, older factsheets that haven't been refreshed, or funds domiciled in jurisdictions that haven't adopted the OCF standard as their primary disclosure metric.
Why the distinction still trips people up
Because AMC, TER, and OCF sound similar and are sometimes used loosely or interchangeably in informal writing (including, at times, in the media), investors comparing funds across different sources — one factsheet quoting an OCF, another quoting only an AMC — can end up making an apples-to-oranges comparison without realising it. This is compounded by the fact that some fund providers still prominently display their AMC in marketing material, even where an OCF is also available in the small print of the KIID, simply because the AMC figure looks smaller and more attractive. Being alert to which specific figure is being quoted, on every occasion a fund's cost is mentioned, is a small habit that meaningfully improves the quality of any fund comparison.
A quick mental checklist when reading any quoted fund fee
- Is this figure explicitly labelled OCF, TER, or AMC — or is it an unlabelled "fee" that could be any of the three?
- Does the source appear to be the fund's official KIID/factsheet, or a secondary summary (a comparison table, a news article, a platform's marketing page) that may have simplified or rounded the figure?
- Is the same type of figure being used consistently across every fund in the comparison being made?
Practical guidance for reading fund documentation
- Always look for the OCF specifically as the primary comparison figure between funds, rather than the AMC alone.
- If a fund's documentation quotes a TER rather than an OCF, treat it as broadly equivalent for comparison purposes, but check the fund's domicile and structure if in doubt.
- Check separately for disclosed transaction costs and any performance fee terms, since these sit outside all three headline figures.
- Remember that none of these figures include the platform charge — that needs to be added separately, as covered in the article on calculating platform fee plus fund fee total cost.
How this terminology appears differently across fund types
The AMC/TER/OCF terminology described here applies most directly to open-ended funds — unit trusts and OEICs — regulated under the UK and EU retail fund frameworks. Investment trusts, which are structured as listed companies rather than open-ended funds, disclose their costs somewhat differently, often using an "ongoing charges ratio" that is conceptually similar to a fund's OCF but calculated under slightly different rules specific to investment trusts. ETFs, meanwhile, virtually always quote a figure functionally equivalent to an OCF, sometimes simply labelled "total expense ratio" or "expense ratio" on international documentation, reflecting that ETF disclosure standards have historically drawn more on US and international conventions than the specific UK/EU OCF terminology. An investor comparing a unit trust, an investment trust, and an ETF pursuing similar strategies should check that the cost figure being compared across all three is genuinely equivalent, since the labels used can differ even where the underlying concept being measured is very similar.
Why providers sometimes still lead with the AMC in marketing
Even where a full OCF is available in the small print, it's not unusual to see a fund's AMC given more prominent placement in marketing material, simply because it's typically the smaller of the two figures and creates a more favourable first impression. This isn't necessarily deceptive — the AMC is a genuine, accurately stated figure for what it represents — but it does mean the burden falls on the investor to actively seek out the OCF for a fair comparison, rather than assuming the most visible number is the complete picture. Regulatory disclosure rules require the OCF to be included in the Key Investor Information Document for retail funds, so it is always available somewhere in the official documentation, even where marketing material emphasises a different figure.
Key takeaways
- The AMC is only the fund manager's own fee; it excludes other running costs and understates the true ongoing cost of a fund.
- The TER was an earlier all-in cost measure, now largely replaced in UK/EU fund documentation by the OCF, though the term still appears occasionally.
- The OCF is the current standardised figure and the most reliable basis for comparing running costs between different funds.
- None of AMC, TER, or OCF include portfolio transaction costs, performance fees, or platform charges, all of which need to be checked separately.
- When comparing funds, look specifically for the OCF, and build up the fuller total cost picture by adding transaction costs and platform charges on top.