Yield on Cost: The Metric That Shows How Powerful Dividend Investing Really Is

Most dividend investors track yield the obvious way: divide the annual dividend per share by the current share price. Buy Johnson & Johnson at £140 and it pays £4.40 per share annually — that's a 3.1% yield. Simple. But there's a second yield figure that experienced investors track, and it tells a completely different story. It's called yield on cost (YOC), and it measures your dividend income against the price you actually paid — not what the stock trades at today. The difference is staggering for long-term holders. A stock you bought at £20 that now pays £3 in annual dividends is yielding 15% on your original cost — even if the current yield shown in your broker app is only 2.5% (because the price has risen to £120). That 15% is your real return on the cash you invested.

The formula is simple: Yield on Cost = Annual Dividend Per Share ÷ Your Purchase Price × 100 For example: • You bought Coca-Cola in 2010 at $28 per share • Coca-Cola currently pays $1.94 per share annually • Your yield on cost = $1.94 ÷ $28 = 6.9% Meanwhile, someone buying Coca-Cola today at $63 would show a current yield of around 3.1% in their broker account. Same dividend. Same company. Very different story depending on when you bought. This is why long-term dividend investors often say their portfolio "pays them more every year" even when they stop adding new money. The dividend grows, but their cost basis stays fixed.

Yield on cost only becomes truly remarkable when you own a company that consistently raises its dividend. Consider this example: You buy a Dividend Aristocrat yielding 3% today. That sounds modest. But if that company raises its dividend by 7% per year — which many quality dividend growers do — your yield on cost doubles in roughly 10 years. • Year 0: YOC = 3% • Year 10: YOC ≈ 5.9% • Year 20: YOC ≈ 11.6% • Year 30: YOC ≈ 22.8% This is why investors who bought Procter & Gamble, Johnson & Johnson, or Coca-Cola in the 1990s are now sitting on yields on cost of 15–30% on their original investment — and collecting those dividends without any additional work. The lesson: a 3% yielder with 8% annual dividend growth is more valuable over 20 years than a 6% yielder with no dividend growth. Yield on cost is the metric that makes this visible.

Both metrics serve different purposes, and knowing when to use each one prevents costly mistakes. Use current yield when: • Deciding whether to buy a new stock — you're evaluating today's entry point, not a hypothetical past one • Comparing two similar stocks — current yield shows what income you'd get per pound invested right now • Checking if a stock is fairly valued — an unusually high current yield may mean undervaluation (or a dividend at risk) Use yield on cost when: • Evaluating whether to hold or sell an existing position — a stock with 1.5% current yield might be generating 12% YOC for you, making it an excellent hold even if you wouldn't buy it today • Measuring the real return on your capital over time • Staying motivated during drawdowns — seeing your YOC continue rising even as the share price wobbles is a useful reminder of why you're holding The most common mistake is using yield on cost to justify not selling a deteriorating company. "But my YOC is 18%" doesn't matter if the business is broken and the dividend is about to be cut. YOC is backward-looking — it rewards patience with healthy companies, not stubbornness with struggling ones.

Here are three rough real-world illustrations of yield on cost for long-term UK dividend investors: Shell (RDSB/SHEL): An investor who bought at £4 per share in the early 2000s and held through the 2020 dividend cut (then restoration) would today see dividends of around £0.36 per share annually — a yield on cost in the 8-9% range, despite Shell currently yielding around 4% for new buyers. Unilever: Bought in 2005 at around £12 per share. Annual dividend now approximately £1.76 per share. Yield on cost: roughly 14-15%. Current yield for new buyers: around 4%. National Grid: A utility held since 2010 at around £5 per share. Annual dividend now around £0.60. Yield on cost: approximately 12%. Current yield: around 5%. These aren't cherry-picked outliers — they're the natural outcome of buying quality dividend payers and holding them for a decade or more while dividends compound.

Your broker probably doesn't show you YOC — it shows current yield, because that's what's relevant for new money. Tracking YOC requires keeping your own records: specifically, the price you paid for each position and the date of purchase. For a simple approach: • Keep a spreadsheet with columns: stock, shares held, average purchase price, current annual dividend per share, YOC • Update the dividend column each time a company raises its payout • Sort by YOC to see which positions have compounded best Over time, your highest-YOC positions are usually the ones you most want to hold forever — they represent years of compounding in action. They're also typically the positions you least want to sell, because any capital you redeploy starts at a much lower YOC and has to work its way back up.

StockSmarty helps you find the right stocks to build your YOC trajectory on — companies with genuine dividend growth history that appear consistently across multiple professional ETFs. These are the kinds of holdings where, if you buy and hold for a decade, your yield on cost quietly climbs while your friends are still hunting for this week's highest-yielding opportunity. The AI portfolio analysis feature includes comments on dividend sustainability and growth track record — the two factors that most drive long-term yield on cost. A stock can only deliver a high YOC in 15 years if it's still raising its dividend in 15 years. Your first 30 days include 3 free analyses. No credit card required.