The math behind DRIP
Each quarter, your dividend buys more shares. Those shares pay dividends next quarter. After 30 years, your share count can easily be 2–3× what you bought — without adding a single dollar of new capital.
That share-count growth, combined with companies raising their per-share dividend over time, is the entire engine.
Where to run a DRIP
Best location: tax-sheltered accounts (Roth IRA, traditional IRA, 401(k)). Dividends compound without annual tax drag.
In taxable accounts, the same DRIP still works but you pay tax every year on dividends you don't see. Over 30 years, that drag adds up — typically 0.5–1.0% per year in lost return.
The yield trap
A stock yielding 10% sounds like a dream. Usually it's either: 1) the price has fallen and the dividend is about to be cut, or 2) it's a structurally distressed business.
For long-term DRIP investing, prefer 2–4% yields with 5–8% dividend growth. Boring beats high-yield dramatic.
Dividends vs. growth stocks
A non-dividend growth stock compounding at 10% can match or beat a 4% dividend + 4% growth stock — total return is total return.
The case for dividends: behavioral. The income psychology makes investors hold through downturns rather than panic-selling.
Common DRIP mistakes
- Chasing the highest yield without checking sustainability.
- Running DRIP in taxable accounts when IRAs have capacity.
- Stopping reinvestment too early — before retirement income is needed.
- Underestimating dividend-growth rate (or assuming it stays flat).
- Not tracking cost basis as small lots pile up.