Among UK investment trusts, a select group has achieved something genuinely rare in the world of income investing: growing their annual dividend payout every single year for two decades or more, spanning multiple recessions, market crashes, and periods of economic upheaval. The Association of Investment Companies (AIC) tracks this group under the informal label "Dividend Heroes". This article explains how they have achieved this consistency and the structural feature that makes it possible.
What the "Dividend Heroes" designation means
The AIC — the trade body representing UK investment trusts — maintains a published list of trusts that have increased their total annual dividend per share every year for at least 20 consecutive years, updated as trusts qualify or, occasionally, fail to extend their streak. This is a factual, published record of past dividend growth, not a guarantee that any trust will continue to increase its dividend in the future.
The structural feature that makes it possible: revenue reserves
The core mechanism enabling long dividend growth streaks is a structural feature unique to investment trusts among the main UK fund types: the ability to retain a portion of the income received in strong years within a "revenue reserve", and draw on that reserve in weaker years to maintain or grow the total dividend paid to shareholders, even when the trust's underlying investment income has temporarily fallen.
How this differs from open-ended funds
Open-ended funds (OEICs and unit trusts) are generally required to distribute substantially all of the income they receive each year, with limited ability to smooth payouts by holding back income in reserve. Investment trusts, by contrast, are permitted under company law to retain up to a certain proportion of their income each year (historically up to 15%, under rules that have evolved over time) building a reserve that can be drawn upon in leaner years.
How revenue reserves are built and used
Building the reserve
In years when a trust's underlying portfolio generates more income than the board decides to distribute, the surplus is retained within the trust's revenue reserve, which builds up over time during periods of strong income growth.
Drawing on the reserve
In years when underlying investment income falls — for example, during a period when many companies cut their dividends, as happened broadly across markets during periods of economic stress — a trust with sufficient reserves can top up the shortfall from its accumulated reserve, allowing the total dividend paid to shareholders to continue growing, or at least avoid being cut, even though the trust's own income for that year was lower.
Why this matters to income-focused investors
For an investor relying on portfolio income — in retirement, for example — the ability of a trust to smooth dividend payments through weaker periods can provide a more predictable income experience than relying on the underlying, naturally more variable, income generated by direct shareholdings or an open-ended income fund without a similar smoothing mechanism. This should be understood as a structural feature affecting historical consistency, not a guarantee about future dividend payments, which always remain at the discretion of the trust's board and depend on the trust maintaining sufficient reserves and income generation over time.
Comparing income smoothing across fund structures
| Structure | Ability to smooth income across years |
|---|---|
| Investment trust | Can retain income in reserve during strong years and draw on it during weaker years |
| OEIC / unit trust | Generally required to distribute substantially all income received each year, limiting smoothing ability |
| ETF | Generally passes through underlying income with limited smoothing mechanism |
| Direct shareholdings | No smoothing — income received reflects whatever the individual companies choose to pay that year |
What to check before relying on a trust's dividend record
The size of the revenue reserve relative to the annual dividend
A trust's annual report typically discloses its revenue reserve, often expressed in relation to how many years' worth of the current dividend it could theoretically cover if income fell to zero. A larger reserve relative to the annual payout suggests more capacity to maintain the streak through a difficult period, though this is not a guarantee.
The underlying portfolio's income generation
A trust's ability to keep extending its dividend growth streak ultimately depends on its underlying portfolio continuing to generate sufficient income over the long run — reserves can smooth temporary shortfalls but cannot indefinitely substitute for underlying income if a structural decline in income persisted for many years.
Dividend yield versus dividend growth
Some Dividend Heroes offer a relatively modest current yield but a long record of dividend growth, while others may offer a higher current yield. These are different characteristics, and investors should consider which — a higher starting income, or a longer record of growth — better matches their own objectives.
A worked example: how a reserve smooths a difficult year
Suppose a hypothetical trust normally receives £5 million a year in dividend income from its underlying equity holdings, pays out £4.5 million to shareholders, and retains £500,000 in its revenue reserve each year during normal conditions. In a hypothetical severe downturn, suppose underlying dividend income received by the trust falls to £3.8 million — a shortfall of £700,000 versus the amount the board wishes to pay out. If the trust has built up several years of £500,000 annual additions to its reserve, it could draw down £700,000 from the accumulated reserve that year, allowing it to maintain or even slightly grow its £4.5 million distribution to shareholders despite the fall in underlying income. This example is a simplified, hypothetical illustration of the mechanism, not a description of any specific trust's actual finances.
Sectors where Dividend Heroes are commonly found
The trusts appearing on the AIC's Dividend Heroes list span a range of investment sectors, including UK equity income, global equity income, and more specialist strategies. What they tend to share, beyond their long dividend growth record, is typically a long-established history as a trust (since building several decades of consecutive dividend growth requires several decades of existence), a board and management approach that has historically prioritised dividend continuity as a stated objective, and a demonstrated willingness to draw on reserves during difficult periods rather than cutting the dividend.
Why longevity itself is part of the story
Because the qualifying threshold is at least 20 consecutive years of dividend growth, the list naturally favours older, more established trusts, some with histories stretching back over a century. Newer trusts, however well managed, cannot appear on the list regardless of their dividend policy, simply because they have not yet existed long enough to build the required track record — a reminder that the list reflects a specific, defined historical achievement rather than a ranking of overall fund quality.
How dividend cover is measured and why it matters alongside reserves
Alongside the size of a trust's revenue reserve, "dividend cover" — the ratio of a trust's income earned in a given year to the dividend actually paid that year — is a further useful metric. A dividend cover of 1.0 means income exactly matched the dividend paid; a figure below 1.0 means the shortfall was funded from reserves; and a figure above 1.0 means the trust added to its reserves that year. Reviewing dividend cover trends over several years, alongside the absolute reserve level, gives a more complete picture of how sustainably a trust's dividend has been funded, rather than looking at the reserve balance in isolation.
What could end a Dividend Hero's streak
A sufficiently severe or sustained fall in underlying portfolio income, a board decision to prioritise capital preservation or reinvestment over maintaining the dividend during a particularly difficult period, or a change in strategy or merger with another trust could all potentially end a long dividend growth streak. Investors relying on this history should treat it as informative context about a trust's historical approach and discipline, rather than as an assurance that applies indefinitely regardless of future circumstances.
Comparing income approaches beyond the Dividend Heroes
Investors interested in income are not limited to trusts on the Dividend Heroes list — many other trusts, and open-ended equity income funds, also pursue income-focused strategies without the same multi-decade unbroken growth record, sometimes offering a higher current yield in exchange for less historical consistency. Comparing the current yield, dividend growth history (even if shorter than 20 years), and revenue reserve position across a range of income-focused options provides a broader basis for research than focusing solely on the Dividend Heroes list.
Tax treatment of investment trust dividends
Dividends received from investment trusts held outside an ISA or SIPP are generally taxed in the same way as dividends from any other UK company shares, assessed against the £500 annual dividend allowance for the 2025/26 tax year, with any excess taxed at rates depending on the investor's overall income tax band. Holding investment trusts within an ISA or SIPP shelters this dividend income from tax entirely, which is a relevant consideration for income-focused investors deciding where to hold such investments. As with all tax figures referenced on this site, readers should check current HMRC guidance, since allowances and rates are reviewed periodically.
Key takeaways
- The AIC's "Dividend Heroes" list identifies UK investment trusts with at least 20 consecutive years of rising annual dividends, a factual record of the past, not a guarantee for the future.
- Revenue reserves — a structural feature largely unique to investment trusts among UK fund types — allow trusts to retain income in strong years and draw on it during weaker years.
- This smoothing ability differs from open-ended funds, which generally must distribute substantially all income received each year.
- Checking a trust's reserve size relative to its annual dividend, and its underlying portfolio's income generation, helps assess the sustainability of its dividend record.
- Long dividend growth streaks reflect historical discipline and structural advantage, but future dividends always remain at the board's discretion and depend on continued income generation.