Can I lose more on Forex than I deposit?
"If you don't use leverage you can't lose more than you invested because you ""play"" with your own money. But even with leverage when you reach a certain limit (maintenance margin) you will receive a margin call from your broker to add more funds to your account. If you don't comply with this (meaning you don't add funds) the broker will liquidate some of the assets (in this case the currency) and it will restore the balance of the account to meet with his/her maintenance margin. At least, this is valid for assets like stocks and derivatives. Hope it helps! Edit: I should mention that" It's the same as with equities. If you're just buying foreign currencies to hold, you can't lose more than you invest. But if you're buying derivatives (e.g. forward contracts or spread bets), or borrowing to buy on margin, you can certainly lose more than you invest. FX is often purchased with leverage by both retail and wholesale speculators on the assumption daily movements are typically more restrained than a number of other asset classes. When volatility picks up unexpectedly these leveraged accounts can absolutely be wiped out. While these events are relatively rare, one happened as recently as 2016 when the Swiss National Bank unleashed the Swiss Franc from its Euro mooring. You can read about it here: http://www.reuters.com/article/us-swiss-snb-brokers-idUSKBN0KP1EH20150116 Contrary to what other people said I believe that even without leverage you can lose more that you invest when you short a FX. Why? because the amount it can go down is alwasy limited to zero but it can, potentially, go up without limit.  See This question for a mored detailed information.
With reference to the UK: Structured deposits should not be confused with structured products.  Structured deposits are often, quite simple deposit accounts. You place your money into what is essentially a deposit account, and are therefore guaranteed not to lose your capital as with any other deposit account. The attraction is that you could earn more than you would in a normal deposit account, often around double, due to indirect exposure to the markets. Another benefit is that structured deposits can form part of your annual cash ISA allowance, so the returns can be tax free. These products are popular with those who have savings which they are happy to deposit away for between 3 and 6 years, and are looking for better rates of return than standard cash ISAs or savings accounts. The main drawback is that you may not receive anything other than your original deposit. That poses a minimal risk if your savings are earning less than 1% currently.  See my article at financialandrew.blogspot.co.uk/2013/03/fed-up-with-low-returns-from-cash-isas.html for a more rounded overview of the structured deposits. I would strongly recommend investing in assets and commodities. I personally believe fiat money is losing its value because of a rising inflation and the price of oil. The collapse of the euro should considerably affect the US currency and shake up other regions of the world in forex markets. In my opinion, safest investment these days are hard assets and commodities. Real estate, land, gold, silver(my favorite) and food could provide some lucrative benefits. GL mate! A 401K (pre-tax or Roth) account or an IRA (Deductible or Roth) account is a retirement account. Which means you delay paying taxes now on your deposits, or you avoid paying taxes on your earnings later.  But a retirement account doesn't  perform any different than any other account year-to-year. Being a retirement account doesn't  dictate a type of investment. You can invest in a certificate of deposit that is guaranteed to make x% this year; or you can invest in stocks, bonds, mutual funds that infest in stocks or bonds. Those stocks and bonds can be growth focused, or income focused; they can be from large companies or small companies; US companies or international companies. Or whatever mix you want. The graph in your question shows that if you invest early in your adulthood, and keep investing, and you make the average return you should make more money than starting later. But a couple of notes:  So to your exact questions: An S&P 500 investment should perform exactly the same this year if it is in a 401K, IRA, or taxable account With a few exceptions:  Yes any investment can lose money. The last 6 months have been volatile and the last month and a half especially so. A retirement account isn't any different. An investment in mutual fund X in a retirement account is just as depressed a one in the same fund but from a taxable account. Chinese suppliers can quote their price in CNY rather than USD (as has been typical), and thus avoid the exchange risk from US dollar volatility- the CNY has been generally appreciating so committing to receive payments in US dollars when their costs are in CNY means they are typically on the losing end of the equation and they have to pad their prices a bit.  Canadian importers will have to buy RMB (typically with CAD) to pay for their orders and Canadian exporters can take payment in RMB if they wish, or set prices in CAD. By avoiding the US dollar middleman the transactions are made less risky and incur less costs. Japan did this many decades ago (they, too, used to price their products in USD).  This is important in transactions of large amounts, not so much for the tiny amounts associated with tourism. Two-way annual trade between China and Canada is in excess of $70bn.  Of course Forex trading may greatly exceed the actual amounts required for trade- the world Forex market is at least an order of magnitude greater than size of real international trade. All that trading in currency and financial instruments means more jobs on Bay Street and more money flowing into a very vital part of the Canadian economy.  Recent article from the (liberal) Toronto Star here. It was a forex account (foreign exchange trading).  At that time forex brokers were not regulated or required to be regulated so it was like the wild west.  It was indeed a learning experience and thankfully I was diversified so the hit hurt but did not ruin me. There are legitimate multi currency mutual funds/efts. But I don't think their rate of return will produce the extra money you're looking for any faster than any other kind of investment with comparable risks. To make money fast, you have to accept nontrivial risk of losing money fast, which isn't what you seem to have in mind. Which of these two factors is likely to be more significant?  There is long term trend that puts one favourable with other. .... I realise that I could just as easily have lost 5% on the LSE and made 5% back on the currency, leaving me with my original investment minus various fees; or to have lost 5% on both. Yes that is true. Either of the 3 scenarios are possible. Those issues aside, am I looking at this in remotely the right way?  Yes. You are looking at it the right way. Generally one invests in Foreign markets for; "I found an answer by Peter Selinger, in two articles, Tutorial on multiple currency accounting (June 2005, Jan 2011) and the accompanying Multiple currency accounting in GnuCash (June 2005, Feb 2007). Selinger embraces the currency neutrality I'm after. His method uses ""[a]n account that is denominated as a difference of multiple currencies... known as a currency trading account."" Currency trading accounts show the gain or loss based on exchange rates at any moment.  Apparently GnuCash 2.3.9 added support for multi-currency accounting. I haven't tried this myself. This feature is not enabled by default, and must be turned on explicity. To do so, check ""Use Trading Accounts"" under File -> Properties -> Accounts. This must be done on a per-file basis. Thanks to Mike Alexander, who implemented this feature in 2007, and worked for over 3 years to convince the GnuCash developers to include it. Older versions of GnuCash, such as 1.8.11, apparently had a feature called ""Currency Trading Accounts"", but they behaved differently than Selinger's method."