Why might a brokerage firm stop offering a particular ETF commission free?
"Forbes has an article investigating this. Here are the key parts: On line at the bottom of the list of funds there is an entire screen   of grey-faded micro print which includes this telling disclosure: TD Ameritrade receives remuneration from certain ETFs (exchange-traded     funds) that participate in the commission-free ETF program for     shareholder, administrative and/or other services. In other words, TD Ameritrade is now enforcing a pay-to-play for their   so-called commission-free exchange-traded funds. They are willing to   forego their $6.95 trading commission in favor of remuneration   directly from the ETF vendors. Because Vanguard refuses to pay such   money to custodians, they are no longer being allowed to play. and Joseph Giannone, a TD Ameritrade spokesman, was quoted as saying,   ""With any business decision, client needs are paramount, but the   underlying economics of programs can’t be ignored. ... In line with   industry practices, certain providers pay servicing, administrative or   other fees. Vanguard elected not to be a part of the new program."" So basically it sounds like Vanguard, and presumably iShares as well, were unwilling to pay TD Ameritrade to continue offering their ETFs commission-free."
Some brokerages will allow you to enroll your account in a dividend reinvestment plan -- TD Ameritrade and I think Schwab for example. The way the plan works is that they would take your $4 and give you whatever fractional share of the ETF it is worth on the payment date. There are no fees associated with this purchase (or at least there are in the programs I've seen -- if you have to pay a fee, look for another brokerage). You may also be able to enroll specific securities instead of the entire account into dividend reinvestment. Call your brokerage to see what they offer. As others have said, it depends on the brokerage firm.  My broker is Scottrade. With Scottrade the commission is assessed and applied the moment the order is filled. If I buy 100 shares of XYZ at $10 a share then Scottrade will immediately deduct $1007.02 out of my account. They add the commission and fees to the buy transaction. On a sale transaction they subtract the commission and fees from the resulting money. So if I sell 100 shares of XYZ at $11 a share I will get 1,092.98 put into my account, which I can use three business days later. It depends on the exact level of risk that you want, but if you want to keep your risk close to zero you're pretty much stuck with the banks (and those rates don't look to be going up any time soon). If you're willing to accept a little more risk, you can invest in some index tracking ETFs instead, with the main providers in Australia being Vanguard, Street State and Betashares.  A useful tool for for an overview of the Australian ETF market is offered by StockSpot. The index funds reduce your level of risk by investing in an index of the market, e.g. the S&P 200 tracked by STW.  If the market as a whole rises, then your investment will too, even though within that index individual companies will rise and fall. This limits your potential rate of return as well, and is still significantly more risky than leaving your cash in an Aussie bank (after all, the whole market can fall), but it might strike the right balance for you. If you're getting started, HSBC, Nabtrade, Commsec and Westpac were all offering a couple of months of free trades up to a certain value.  Once the free trades are done, you'll do better to move to another broker (you can migrate your shares to the others to take advantage of their free trades too) or to a cheaper broker like CMC Markets. ETFs offer the flexibility of stocks while retaining many of the benefits of mutual funds. Since an ETF is an actual fund, it has the diversification of its potentially many underlying securities. You can find ETFs with stocks at various market caps and style categories. You can have bond or mixed ETFs. You can even get ETFs with equal or fundamental weighting. In short, all the variety benefits of mutual funds. ETFs are typically much less expensive than mutual funds both in terms of management fees (expense ratio) and taxable gains. Most of them are not actively managed; instead they follow an index and therefore have a low turnover. A mutual fund may actively trade and, if not balanced with a loss, will generate capital gains that you pay taxes on. An ETF will produce gains only when shifting to keep inline with the index or you yourself sell. As a reminder: while expense ratio always matters, capital gains and dividends don't matter if the ETF or mutual fund is in a tax-advantaged account. ETFs have no load fees. Instead, because you trade it like a stock, you will pay a commission. Commissions are straight, up-front and perfectly clear. Much easier to understand than the various ways funds might charge you. There are no account minimums to entry with ETFs, but you will need to buy complete shares. Only a few places allow partial shares. It is generally harder to dollar-cost average into an ETF with regular automated investments. Also, like trading stocks, you can do those fancy things like selling short, buying on margin, options, etc. And you can pay attention to the price fluctuations throughout the day if you really want to. Things to make you pause: if you buy (no-load) mutual funds through the parent company, you'll get them at no commission. Many brokerages have No Transaction Fee (NTF) agreements with companies so that you can buy many funds for free. Still look out for that expense ratio though (which is probably paying for that NTF advantage). As sort of a middle ground: index funds can have very low expense ratios, track the same index as an ETF, can be tax-efficient or tax-managed, free to purchase, easy to dollar-cost average and easier to automate/understand. Further reading: 12b1's have fallen out of favor in recent years, and are typically capped at about 0.25%. they are also usually waived and factored into the fund OER these days, too, though it depends on who your broker is.  any revenue sharing shouldn't increase your fees. in my experience, there is more incentivizing for cross selling rather than revenue sharing, but in any case those would be fractions of your revenue allocated to different parties, and not additional fees. &gt;implicitly through their fee structure.  Index ETF and stock trades cost the same at Robinhood (free).  Do you believe Robinhood (and other brokers) should charge a fee for single stock trades to discourage investors from purchasing them over index ETFs?  Honestly, I'm not saying this idea is right or wrong.  It's an interesting proposition. I was going to comment on the commission-free ETF answer, which I agree with, but I don't have enough reputation. TD Ameritrade has a list of commission-free ETFs and has no minimum deposit required to open an account. Another idea is to keep gifts in cash until a certain threshold is reached. For instance, $100 for birthday, $100 for Christmas, $100 for next birthday, $100 for next Christmas, now execute the trade. Sharebuilder has $4 scheduled trades, so you'd be at about 1% overhead for that. If other people give money, you'll reach the threshold faster of course. For what it's worth, I do something similar for my 2 nieces. I combined their account and prepay Christmas plus birthday, so I do 1 trade a year. I have my account at Sharebuilder because my idea predated the commission-free ETFs that are now pretty popular. I should really transfer the account... hm. Prior to 1975, commissions for trading stock on the NYSE were fixed at 1% of the amount of the trade.  In 1975, the SEC made fixed commission rates illegal, giving rise to discount brokers offering much reduced commission rates.  Simultaneously, Electronic Communications Networks (ECNs) gained market share as alternative venues for executing trades.  The increased competition led to further declines in commissions.  Finally, as technology was widely adopted on Wall Street and human beings were largely taken out of the order execution process, commissions fell further.  This had the effect of both drawing in new participants and increasing the rate of transactions of the existing participants (see Day Trading, which was largely unheard of prior to the technology revolution of the 1990s).  Most recently, the exchanges themselves have shifted their business model to depend on high frequency traders, and the proportion of trades accounted for by HFT firms ballooned from under 10% in the early 2000s to over 50% today.