ETF vs Mutual Fund: How to decide which to use for investing in a popular index?
The factors to consider: What is your time horizon? Over long horizons, you absolutely want to minimise the expense ratio – a seemingly puny 2% fee p.a. can cost you a third of your savings over 35 years. Over short horizons, the cost of trading in and trading out might matter more. A mutual fund might be front-loaded, i.e. charge a fixed initial percentage when you first purchase it. ETFs, traded daily on an exchange just like a stock, don't have that. What you'll pay there is the broker commission, and the bid-ask spread (and possibly any premium/discount the ETF has vis-a-vis the underlying asset value).  Another thing to keep in mind is tracking error: how closely does the fond mirror the underlying index it attempts to track? More often than not it works against you. However, not sure there is a systematic difference between ETFs and funds there. Size and age of a fund can matter, indeed - I've had new and smallish ETFs that didn't take off close down, so I had to sell and re-allocate the money. Two more minor aspects: Synthetic ETFs and lending to short sellers. 1) Some ETFs are synthetic, that is, they don't buy all the underlying shares replicating the index, actually owning the shares. Instead, they put the money in the bank and enter a swap with a counter-party, typically an investment bank, that promises to pay them the equivalent return of holding that share portfolio. In this case, you have (implicit) credit exposure to that counter-party - if the index performs well, and they don't pay up, well, tough luck. The ETF was relying on that swap, never really held the shares comprising the index, and won't necessarily cough up the difference. 2) In a similar vein, some (non-synthetic) ETFs hold the shares, but then lend them out to short sellers, earning extra money. This will increase the profit of the ETF provider, and potentially decrease your expense ratio (if they pass some of the profit on, or charge lower fees). So, that's a good thing. In case of an operational screw up, or if the short seller can't fulfil their obligations to return the shares, there is a risk of a loss.  These two considerations are not really a factor in normal times (except in improving ETF expense ratios), but during the 2009 meltdown they were floated as things to consider. Mutual funds and ETFs re-invest or pay out dividends. For a given mutual fund, you might be able to choose, while ETFs typically are of one type or the other. Not sure how tax treatment differs there, though, sorry (not something I have to deal with in my jurisdiction).  As a rule of thumb though, as alex vieux says, for a popular index, ETFs will be cheaper over the long term. Very low cost mutual funds, such as Vanguard, might be competitive though. If you just want to track an index, then ETFs are, generally speaking, the better way.
Bond ETFs are just another way to buy a bond mutual fund.  An ETF lets you trade mutual fund shares the way you trade stocks, in small share-size increments.  The content of this answer applies equally to both stock and bond funds. If you are intending to buy and hold these securities, your main concerns should be purchase fees and expense ratios.  Different brokerages will charge you different amounts to purchase these securities.  Some brokerages have their own mutual funds for which they charge no trading fees, but they charge trading fees for ETFs.  Brokerage A will let you buy Brokerage A's mutual funds for no trading fee but will charge a fee if you purchase Brokerage B's mutual fund in your Brokerage A account. Some brokerages have multiple classes of the same mutual fund.  For example, Vanguard for many of its mutual funds has an Investor class (minimum $3,000 initial investment), Admiral class (minimum $10,000 initial investment), and an ETF (share price as initial investment).  Investor class has the highest expense ratio (ER).  Admiral class and the ETF generally have much lower ER, usually the same number.  For example, Vanguard's Total Bond Market Index mutual fund has Investor class (symbol VBMFX) with 0.16% ER, Admiral (symbol VBTLX) with 0.06% ER, and ETF (symbol BND) with 0.06% ER (same as Admiral).  See Vanguard ETF/mutual fund comparison page.  Note that you can initially buy Investor class shares with Vanguard and Vanguard will automatically convert them to the lower-ER Admiral class shares when your investment has grown to the Admiral threshold. Choosing your broker and your funds may end up being more important than choosing the form of mutual fund versus ETF.  Some brokers charge very high purchase/redemption fees for mutual funds.  Many brokers have no ETFs that they will trade for free.  Between funds, index funds are passively managed and are just designed to track a certain index; they have lower ERs.  Actively managed funds are run by managers who try to beat the market; they have higher ERs and tend to actually fall below the performance of index funds, a double whammy. See also Vanguard's explanation of mutual funds vs. ETFs at Vanguard. See also Investopedia's explanation of mutual funds vs. ETFs in general. Canadian Couch Potato has an article which is somewhat related. Ask the Spud: Can You Time the Markets? The argument roughly boils down to the following: That said, I didn't follow the advice. I inherited a sum of money, more than I had dealt with before, and I did not feel I was emotionally capable of immediately dumping it into my portfolio (Canadian stocks, US stocks, world stocks, Canadian bonds, all passive indexed mutual funds), and so I decided to add the money into my portfolio over the course of a year, twice a month. The money that I had not yet invested, I put into a money market account. That worked for me because I was purchasing mutual funds with no transaction costs. If you are buying ETFs, this strategy makes less sense. In hindsight, this was not financially prudent; I'd have been financially better off to buy all the mutual funds right at the beginning. But I was satisfied with the tradeoff, knowing that I did not have hindsight and I would have been emotionally hurt had the stock market crashed. There must be research that would prove, based on past performance, the statistically optimal time frame for dollar-cost averaging. However, I strongly suppose that the time frame is rather small, and so I would advise that you either invest the money immediately, or dollar-cost average your investment over the course of the year. This answer is not an ideal answer to your question because it is lacking such a citation. "Former financial analyst here, happy to help you. First off, you are right to not be entirely trusting of advisors and attorneys. They are usually trustworthy, but not always. And when you are new to this, the untrustworthy ones have a habit of reaching you first - you're their target market. I'll give you a little breakdown of how to plan, and a starting investment. First, figure out your future expenses. A LOT of that money may go to medical bills or associated care - don't forget the costs of modifications and customizations to items so you can have a better quality of life. Cars can be retrofit to assist you with a wheelchair, you can build a chair lift into a staircase, things like that which will be important for mobility - all depending on the lingering medical conditions. Mobility and independence will be critically important for you. Your past expenses are the best predictor of future expenses, so filter out the one-time legal and medical costs and use those to predict. Second, for investing there is a simple route to get into the stock market, and hopefully you will hear it a lot: Exchange Traded Funds (ETFs). You'll hear ""The S&P 500 increased by 80 points today..."" on the news; the S&P is a combination of 500 different stocks and is used to gauge the market overall. You can buy an exchange traded fund as a stock, and it's an investment in all those components. There's an ETF for almost anything, but the most popular ones are for those big indexes. I would suggest putting a few hundred thousand into an S&P 500 indexed ETF (do it at maybe $10,000 per month, so you spread the money out and ensure you don't buy at a market peak), and then let it sit there for many years. You can buy stocks through online brokerages like Scottrade or ETrade, and they make it fairly easy - they even have local offices that you can visit for help. Stocks are the easiest way to invest. Once you've done this, you can also open a IRA (a type of retirement account with special tax benefits) and contribute several thousand dollars to it per year. I'll be happy to give more advice if/when you need it, but there are a number of good books for beginning investors that can explain it better than I. I would suggest that you avoid real estate, especially if you expect to move overseas, as it is significantly more complicated and has maintenance costs and taxes." Emergency funds, car funds etc tend to have to be accessible quickly (which tends to rule out CDs unless you have the patience to work something like a monthly CD ladder, an I don't) and you'll want your principal protected. The latter pretty much rules out any proper investment (ETFs, mutual funds, stock market directly, Elbonian dirt futures etc). It's basically a risk-vs-return calculation. Not much risk, not much return but at least you're not losing from a nominal standpoint). Another consideration is that you normally aren't able to decide freely if and when you want to pull money out of an emergency fund. If it is an emergency, waiting three weeks to see if the stock market goes up a little further isn't an option so you might end up having to take a hit that would be irrelevant if you were investing long term but might hurt badly because you're left with no choice. I'd stick that sort of money into a money market account and either add to it if necessary to keep up with inflation or make sure that my non-retirement investments over and above these funds are performing well, as those will and should become a far bigger part of your wealth in the longer run. What decision are you trying to make?  Are you interested day trading stocks to make it rich? Or are you looking at your investment options and trying to decide between an actively managed mutual fund and an ETF? If the former, then precise statistics are hard to come by, but I believe that 99% of day traders would do better investing in an ETF. If the latter, then there are lots of studies that show that most actively managed funds do worse than index funds, so with most actively managed funds you are paying higher fees for worse performance.  Here is a quote from the Bogleheads Guide to Investing: Index funds outperform approximately 80 percent of all actively   managed funds over long periods of time. They do so for one simple   reason: rock-bottom costs. In a random market, we don't know what   future returns will be. However, we do know that an investor who keeps   his or her costs low will earn a higher return than one who does not.   That's the indexer's edge. Many people believe that your best option for investing is a diverse portfolio of ETFs, like this.  This is what I do. One estimate is to sell today, estimate the taxes, and determine how much cash you need to set aside over the next 12 months. The is no way to calculate what impact dividends and capital gains the funds will have, because unlike interest they aren't guaranteed. The other complexity is that the funds themselves could drop in value. In that case the dividends and capital gains may not even be enough to get you back to even. I use mutual funds to invest over the long term, with the idea of spending the funds over decades. When needing to save for a short term goal, I use banking products. They are guaranteed not to lose value, and the interest changes are slowerand thus easier to predict. Mutual funds don't do what ETFs do because, according to how the fund was built in their contract, they can't.  That is not how they are built and the people that invested in them expect them to act in a certain way. That is ok, though.  Many people still invest in mutual funds partially because of their history but there are some advantages to mutual funds over etfs.  Mainly mutual funds must mark-to-market at the end of day while etf values can drift from the asset value especially in crisis.  As long enough people invest in mutual funds the funds make enough money on their fees they don't need to change.  Maybe mutual funds will go extinct as etfs do have significant advantages, but it likely won't happen soon. Note that many funds just track indexes. In that case, you essentially don't have to worry about the fund manager making bad decisions. In general, the statistics are very clear that you want to avoid any actively managed fund. There are many funds that are good all-in-one investments. If you are in Canada, for example, Canadian Couch Potato recommends the Tangerine Investment Funds. The fees are a little high, but if you don't have a huge investment, one of these funds would be a good choice and appropriate for 100% of your investment. If you have a larger investment, to the point that Tangerine's MER scares you a little, you still may well look at a three or four fund (or ETF) portfolio. You may choose to use an actively-managed fund even though you know there's virtually no chance it'll beat a fund that just tracks an index, long-term. In that case, I'd recommend devoting only a small portion of your portfolio to this fund. Many people suggest speculating with no more than 10% of your combined investment. Note that other people are more positive on actively-managed funds.