One of the most motivating — and often overlooked — concepts in dividend investing is yield on cost. It's a simple metric that reveals something profound about what happens when you buy quality dividend growers and hold them for years or decades. For many long-term investors, it's the number that makes the entire strategy click.
Let me explain what it is, why it matters, and how it should influence the way you think about building a dividend portfolio.
The Basic Definition
Yield on cost (sometimes called "personal yield" or "yield on purchase price") is your annual dividend income expressed as a percentage of what you originally paid for the shares — not today's market price.
Yield on Cost = Current Annual Dividend Per Share ÷ Your Original Purchase Price × 100
This is different from the current yield, which uses today's market price. Yield on cost is personal — it's specific to you and when you bought the stock.
A Simple Example
Suppose you buy 100 shares of a company at $50 per share in 2016. At the time, the company pays a $1.50 annual dividend — a 3% yield at your purchase price.
Fast forward to 2026. The company has raised its dividend every year. The dividend is now $3.20 per share annually. The share price has risen to $140.
New buyers see a current yield of $3.20 ÷ $140 = 2.3%. Not particularly impressive compared to what they could get elsewhere.
But your perspective is completely different:
- You paid $50 per share
- You're receiving $3.20 per share in annual dividends
- Your yield on cost: $3.20 ÷ $50 = 6.4%
On your original $5,000 investment, you're now receiving $320 per year in dividends — and that income will keep growing as long as the company keeps raising its dividend. You didn't do anything after the initial purchase. Time and compounding did the work.
Why Yield on Cost Changes Your Perspective
Most investors evaluate dividend stocks based on current yield. That's useful for deciding whether to buy something today — but it misses the most important part of the dividend growth story.
When you buy a dividend grower and hold it for 10–20 years, your current yield (based on purchase price) can become extraordinary — often 2x, 3x, or even 5x the yield you originally bought at. This is the compounding magic of dividend growth investing that doesn't show up in any current snapshot of the stock.
Consider Coca-Cola. Investors who bought in 2005 paid around $20 per share. Today's dividend is approximately $1.94 per share annually. Their yield on cost: $1.94 ÷ $20 = 9.7%. Nearly 10% yield on their original cost — from a company that most people consider a modest, boring consumer staples stock today.
The Role of Dividend Growth Rate
The speed at which yield on cost grows depends entirely on the dividend growth rate. A company that grows its dividend 10% per year will roughly double it every 7 years. Here's how yield on cost evolves at different growth rates, starting from a 3% initial yield:
| Dividend Growth Rate | Year 5 YOC | Year 10 YOC | Year 20 YOC |
|---|---|---|---|
| 3% per year | 3.5% | 4.0% | 5.4% |
| 5% per year | 3.8% | 4.9% | 8.0% |
| 7% per year | 4.2% | 5.9% | 11.6% |
| 10% per year | 4.8% | 7.8% | 20.2% |
Look at what a 10% dividend growth rate does over 20 years. A stock you bought at a 3% yield is now yielding over 20% on your cost basis. This is why investors who bought Microsoft, Apple, or Visa in the early 2010s at what seemed like modest yields are now collecting income that looks extraordinary relative to what they paid.
Yield on Cost and DRIP
Yield on cost gets even more interesting when combined with dividend reinvestment. Each time you reinvest dividends through a DRIP, you're buying additional shares. Those shares have their own cost basis, and they start generating their own dividends. Over time, the average cost of all your shares tends to rise as prices go up — but your accumulated dividends are constantly working to increase your total share count and total income.
The combination of dividend growth (income per share increasing) and DRIP (share count increasing) creates a dual compounding effect that accelerates yield on cost significantly beyond what either mechanism would produce alone.
How to Use Yield on Cost in Practice
Yield on cost is primarily a retrospective metric — it tells you how well a past purchase has performed from an income perspective. But it has practical forward-looking uses too:
As a Holding Decision Tool
When a stock you've held for years looks "expensive" by current yield (say, only 1.5% at today's price), you might be tempted to sell and redeploy the capital to a higher-yielding stock. But if your yield on cost is 6%, selling means giving up that 6% income stream and starting over at 1.5% or wherever the new stock yields. The tax bill from selling, plus the reset of your income stream, often makes holding the right decision even when current yield looks unattractive.
As a Patience Reinforcer
Seeing your yield on cost grow over years is a powerful reminder of why you're holding. When markets drop and a stock looks scary, your yield on cost — which hasn't changed — is a grounding reminder of what you actually bought and what it's doing for you.
As a Selection Filter
When evaluating potential purchases, projecting the future yield on cost based on expected dividend growth can help you identify which investments are likely to compound income most powerfully. A 2% current yield that you expect to grow at 12% per year may produce a better yield on cost in 15 years than a 5% current yield that grows at 2% per year.
The Limitations of Yield on Cost
Yield on cost is a useful perspective, but it has a few limitations worth acknowledging:
- It's backward-looking — your yield on cost tells you how a past decision worked out; it doesn't tell you what to do next
- It can justify holding bad investments too long — if a company's fundamentals have deteriorated, clinging to a high yield on cost can be a mistake. The stock's future matters more than your past entry price.
- It's not comparable across investors — your yield on cost for a stock is entirely personal; it depends on when you bought, at what price, and whether you've been reinvesting
See Your Own Dividend Numbers
Use our free calculator to see exactly how much annual income your portfolio generates right now.
Try the Free Calculator →Summary
Yield on cost is the metric that reveals the compounding power of dividend growth investing over time. By measuring your current income against what you originally paid — rather than today's market price — it shows how a well-chosen dividend grower becomes an increasingly powerful income generator with each passing year. The key insight is this: when you buy quality dividend growers and hold them through market cycles, time transforms even modest starting yields into extraordinary income streams. That's the core promise of long-term dividend investing, and yield on cost is how you measure whether it's being delivered.