Whenever I update the returns of my model portfolios, readers ask how the performance would have been different had they added money to the portfolios money each month. This question gets to the heart of the difference between time-weighted and money-weighted returns, which I introduced in my previous post.
In our new white paper, Understanding Your Portfolio’s Rate of Return, Justin Bender and I explain the differences between these two methods using two hypothetical investors with a $250,000 portfolio: the first makes a single $25,000 contribution while the other makes a $25,000 withdrawal. Now let’s look at a different example that includes monthly cash flows.
A tale of two accounts
Meet Buster, an investor with an RRSP and a TFSA that both hold an index fund of Canadian stocks (I’ve used the MSCI Canada Investable Market Index for the calculations.) At the beginning of 2014, Buster’s RRSP had a balance of $200,000 and he made $500 monthly contributions throughout the year. Buster’s TFSA has valued at $30,000 at the beginning of the year and he made a single lump-sum contribution of $10,000 in September.
At the end of the year,