Concept 1
What is DRIP Investing?
DRIP stands for Dividend Reinvestment Plan. Instead of receiving your dividend payment as cash, the money is automatically used to purchase additional shares of the same stock or ETF. Those new shares then generate their own dividends — which buy even more shares. This is the income snowball in action.
Canadian investors access DRIP in two ways. A full DRIPis registered directly with the company — dividends are converted to shares at zero cost and sometimes at a slight discount. A synthetic DRIP is administered by your broker (Questrade, Wealthsimple, etc.) and uses your dividend cash to purchase whole shares on the open market at the current price.
The key difference: a synthetic DRIP only triggers when your dividend payment is large enough to buy at least one whole share. If your quarterly dividend is $47 and the share price is $58, your DRIP does not reinvest — the $47 sits as cash until the next payment cycle. This is the threshold problem the DRIP Engine Simulator is built to solve.
Full guide: What is DRIP investing in CanadaConcept 2
The DRIP Buffer | Your Safety Margin
The DRIP Buffer is the margin between your current quarterly dividend income and the minimum required to buy one share at the current price. It tells you how much breathing room you have before rising prices break your automatic reinvestment.
Example: you hold 400 shares of a stock paying $0.62/quarter. Your quarterly dividend = $248. The share price is $185. Your DRIP buffer is $248 − $185 = $63. That $63 is your margin. If the share price rises above $248, your DRIP breaks — one payment can no longer buy one full share.
A healthy buffer means your DRIP is self-sustaining. A thin or negative buffer means your income growth is stalling while your share price climbs away from you. The DRIP Buffer is the number serious income investors watch alongside yield and payout ratio.
Full guide: What is a DRIP buffer?Concept 3
Coverage Ratio | The Fortress Framework
The Coverage Ratio is the core metric of the Prospyr system. It measures the ratio of your quarterly dividend income to the current share price:
A Coverage Ratio of 1.00 means your dividend exactly covers one share purchase. A ratio above 1.00 means you have buffer. Below 1.00, your DRIP is already broken — one payment cannot buy one share.
Prospyr uses four status levels derived from the Coverage Ratio:
Fully defended. DRIP is safe with meaningful buffer. Rising prices have room to run before you need to act.
Healthy but worth monitoring. Buffer exists but is thinning. Watch for price appreciation and dividend growth.
Approaching the danger zone. Consider adding shares to restore buffer before the next ex-dividend date.
DRIP is unsustainable at the current share price. One quarterly payment cannot buy one full share.
Concept 4
Price Creep | The Hidden DRIP Killer
Price Creepis the gradual erosion of your DRIP sustainability as a stock’s share price rises faster than its dividend payout. It is counterintuitive: a rising share price feels like a win, but for a DRIP investor, it silently works against you.
If a stock appreciates 12% annually but raises its dividend only 4%, the gap between your quarterly payment and the share price widens every year. A DRIP that is comfortably in Fortress Status today can drift to At Risk in two to three years without any change in your behaviour.
This is why monitoring your Coverage Ratio over time matters more than checking it once when you buy. The DRIP Engine’s Price Appreciation What-If toggle lets you set a target price and see exactly how many shares you would need to maintain your current Coverage Ratio at that price — before you need to act.
Full guide: How rising prices break your DRIPConcept 5
The DRIP Break Point
The DRIP Break Point is the specific share price at which your DRIP becomes unsustainable. It is the exact price where one quarterly dividend payment can no longer purchase one whole share.
If you hold 350 shares paying $0.55/quarter, your quarterly dividend = $192.50. Your DRIP Break Point is $192.50 — once the share price exceeds that number, DRIP stops working automatically.
Knowing your Break Point in advance lets you act before the problem arrives. You can add shares to raise your quarterly dividend, or track the stock’s price trajectory and set an alert threshold. The DRIP Engine calculates your Break Point automatically alongside your current Coverage Ratio.
Run Your Numbers
Every concept on this page has a calculator behind it. Start with the DRIP Engine.
DRIP Engine SimulatorPrimary Tool
Calculate your Coverage Ratio, DRIP Buffer, Break Point, Shares to Fortress, and price creep What-If for any holding.
Dividend Income Calendar
Map your full portfolio's dividend payments month by month. See income gaps, DRIP growth projections, and your daily passive income.
Dividend Calculator
Calculate yield, yield on cost, and foreign withholding tax impact on US dividends held in TFSA and RRSP accounts.
Portfolio Conversion Tool
Model the income gain and capital gains tax cost of converting growth ETFs or stocks to dividend-paying holdings.
Disclaimer
Disclaimer: This content is for informational and educational purposes only. It is not licensed financial, tax, or legal advice. Coverage Ratio calculations and DRIP projections are estimates based on user-provided inputs. Actual dividend payments, share prices, and reinvestment outcomes will vary. Always consult a qualified financial advisor before making investment decisions. Prospyr is not affiliated with any financial institution or brokerage.