DRIP Investing Calculator Methodology
How reinvestment comparisons work and why assumptions matter.
What A DRIP Comparison Is Trying To Show
A DRIP comparison estimates the difference between taking dividends as cash and using those dividends to buy more shares. Over long periods, reinvestment can compound because the new shares may also generate dividends.
The comparison is most useful when it makes assumptions visible. Starting price, dividend yield, dividend growth, price growth, and reinvestment timing all affect the result.
Reinvestment Is A Model, Not A Promise
A calculator cannot know future prices or future dividend decisions. It can only show how a scenario behaves under the assumptions entered by the user.
That is why DRIP output should be treated as planning context. It helps compare scenarios, but it is not a forecast of guaranteed returns.
Compare Similar Assumptions
When comparing two tickers, use assumptions that make sense for each one. A high-yield fund, a mature dividend company, and a fast-growing low-yield stock may need different growth assumptions.
The useful question is not which line is highest under aggressive assumptions. The useful question is which scenario remains reasonable when assumptions become more conservative.
Dividends Inside