Dividends are not extra money appearing from nowhere

This is less a set of instructions about dividends than an argument, and it is worth saying so at the start.

Where the money comes from

A dividend is cash leaving the company and arriving in your account, so the company is worth that much less afterwards. On the ex-dividend date the share price typically drops by approximately the dividend, for exactly this reason. Receiving a dividend therefore converts part of your holding into cash rather than adding to it.

This is not an argument against dividends; it is an argument against treating them as income arriving from outside the investment.

Total return is the honest measure

Total return adds capital movement and income together, which is the only way to compare a high-dividend holding with a low-dividend one. Comparing yields alone systematically favours companies that pay out more and grow less, which may or may not be what you want. A very high yield frequently reflects a fallen price rather than a generous board, and sometimes precedes a cut.

Over a full year, checking whether a yield rose because the payment increased or because the price fell takes one look at the history.

Reinvesting is where the compounding comes from

Over long periods, reinvested dividends have accounted for a substantial share of total equity returns in most markets studied. The mechanism is simply that each payment buys more units which themselves produce payments. Spending dividends instead is a legitimate choice for someone who needs income and a significant drag for someone who does not.

The arithmetic is straightforward: the decision should be made deliberately rather than by whichever setting the platform defaulted to.

Income and accumulation units

Funds commonly offer income units, which pay out distributions, and accumulation units, which reinvest them inside the fund. The underlying investments are identical, so the difference is administrative rather than a difference in return. Accumulation units remove the need to reinvest manually, at the cost of making the tax records slightly harder to follow in taxable accounts.

In some jurisdictions reinvested income is still taxable in the year it arises even though no cash was received, which surprises people.

Tax treatment varies a great deal

Different countries tax dividend income and capital gains at different rates, and the gap between them can be substantial. That gap is what makes the choice between income-producing and growth-producing holdings a tax question in taxable accounts. Inside sheltered accounts the distinction often disappears, which changes the optimal arrangement considerably.

Rules and rates change and depend on personal circumstances, so this needs local professional advice rather than a general principle.

This is general information, not advice about your particular position.

Dividend cuts happen and are informative

Dividends are declared at the board's discretion and can be reduced or suspended, typically when cashflow is under pressure. Companies are generally reluctant to cut, which is why a cut tends to be treated as a significant signal by the market.

A portfolio built around income from a small number of high-yield companies concentrates exactly this risk. Whether an income-focused approach suits you depends on your circumstances and is a matter for regulated advice.

The takeaway

Judge holdings on total return. A dividend moves money from one of your pockets to another, minus any tax on the way.

Write the number down before you decide. It usually decides for you.