Dollar Cost Averaging Calculator

This is a simple calculator which answers the question: "If I'm dollar cost averaging my investment purchases, how often should I buy in order to minimise fees while not wasting too much potential return?" This is primarily with ETFs in mind, but it could potentially be used for other dollar-cost-averagable investments with purchase costs.

How much will you save per period?	$
Select the period length	Week Fortnight Month Year
Enter your Cash Savings Interest Rate (p.a.)	%
Enter your expected average return of the investment (p.a.)	%
How much brokerage do you pay per purchase? *	$

* To save money on brokerage I buy using SelfWealth which charges a flat $9.50 per trade. If you register using my referral link we will both receive 5 free trades.

 This calculator is based on mathematics and spreadsheet formulas provided by StackExchange user codebeard. Source