Foreign currency losing value — can I report this as a loss for tax purposes?
This loss would be unrealized and, assuming you're a cash-basis tax-payer, you would not be able to take a loss on your 2014 tax return. This is similar to if you held a stock that lost 50% of its value. You wouldn't be able to claim this loss until you finally sold it.  The link that User58220 posted may come into play if you converted your UAH back to USD.
How can I correctly account for having money in different currencies, without currency transfers or currency fluctuations ending up as gains or losses? In my view, your spreadsheet should be in multiple currencies. i.e. if you have gained some in specific currency, make a note of it in that specific currency. If you have spent something in a specific currency, then make a note accordingly. You can use an additional column for reporting this in a neutral currency say GBP. If you are transferring the money from account of one currency to account of another; change the balances as appropriate with the actual conversion rate. If you need this record keeping for tax purposes, then get a proper advise from accountant. Given your needs, GNUcash will do swimmingly. I've used it for the past 3 years and while it's a gradual learning process, it's been able to resolve most stuff I've thrown at it. Schedule bills and deposits in the calendar view so I can keep an eye on cash flow.  GNUcash has scheduled payments and receipts and reconcilation, should you need them. I prefer to keep enough float to cover monthly expenses in accounts rather than monitor potential shortfalls.   Track all my stock and mutual fund investments across numerous accounts. It pulls stock, mutual and bond quotes from lots of places, domestic and foreign. It can also pull transaction data from your brokers, if they support that.  I manually enter all my transactions so I can keep control of them. I just reconcile what I entered into Quicken based on the statements sent to me. I do not use Quicken's bill pay There's a reconciliation mode, but I don't use it personally. The purpose of reconcilation is less about catching bank errors and more about agreeing on the truth so that you don't incur bank fees. When I was doing this by hand I found I had a terrible data entry error rate, but on the other hand, the bayesian importer likes to mark gasoline purchases from the local grocery store as groceries rather than gas. I categorize all my expenditures for help come tax time. GNUcash has accounts, and you can mark expense accounts as tax related. It also generates certain tax forms for you if you need that. Not sure what all you're categorizing that's helpful at tax time though. I use numerous reports including. Net Worth tracking, Cash not is retirement funds and total retirement savings. Tons of reports, and the newest version supports SQL backends if you prefer that vs their reports. "The simple answer would be - if you want to take Euros from Germany to Spain as cash and deposit them, you're not breaking any laws, there is nothing to declare to customs (you're still in the EU), it is not ""income"" so there is nothing to tax, and your bank should be able to receive it without issue (no currency conversion after all). It does however come with the risk of loss/theft en route. So it really depends on how comfortable you are walking around with that much on your person. If you don't want to carry that much around and your banks are imposing unreasonable fees, here's something you could investigate further (I have not tested it myself): Transferwise offers a service that lets people send money to foreign accounts (in different currencies) for a small fee, at mid-market rates. However, they also offer a ""request money"" feature which allows EUR-EUR transfers (and some other same currency transfers). So perhaps you could use this feature to simply request money from yourself. The requester puts in how much they want to receive. Then they send a generated link to the other party. When clicked, that link sets up a transaction for the requested amount, and sometimes a nominal fee (I created a link for a GBP-GBP transfer and it wanted 1 pound extra, but when I did the same for EUR-EUR it didn't want any extra). I assume you would need two Transferwise accounts, though maybe not? And I'm not sure whether doing this is technically allowed in their terms of service, so you should read those to be sure. The advantage, if this works, is that neither bank sees it as a ""transfer"". Rather, the originating bank makes a payment to Transferwise, and then Transferwise makes a deposit to the receiving account. So I can't imagine either bank would be able to impose their foreign-bank-transfer fees for the transaction. https://transferwise.com/request-money I have used Transferwise for currency conversions, but not the request money feature, maybe other users could chime in if they have used it." "&gt;If we lose our reserve currency status, we would have to pay it off with a different currency.   No, a debt that comes into being as dollar-denominated remains dollar-denominated. Reserve currency status doesn't change this.  The advantage of having the reserve currency is that other countries have a strong motive to accumulate dollars. Because of this we can pay for our imports in dollars. If we no longer had the reserve currency we would lose the ability to run a persistent trade deficit without borrowing foreign currency to do so.  To some extent this would self-correct. If foreigners no longer desired to hoard dollars, the flow of dollars back in to the US would bring down the trade deficit. Going forward, we'd have to ""live within our means"" with respect to foreign trade, funding imports with exports.  Domestically every country that has its own currency, not just the US, can use that currency to fully fund its own domestic productive capacity. Printing money doesn't make a poor country rich but it does allow any country to fully realize its own potential.  &gt;Other countries don't have the luxury of just printing out massive amounts of money to pay off their debts.  This is only true when a country borrows in a currency it doesn't issue. When a country spends in its own currency its policy space is constrained by inflation. To the extent any country uses, pegs to or borrows in someone else's currency that policy space is narrowed by the need to first borrow or earn that currency.  &gt;if the UN followed through with its suggestion to create a global reserve currency or reverted back to the gold standard  The euro shows us where that road leads. Countries that give up monetary authority give up sovereignty and when they find themselves in a situation where the monetary policy they no longer control is at odds with their needs, their economies get torn apart.  That's why one country, one currency is good policy. Stability and maximum policy space is achieved when fiscal authority, political legitimacy and monetary authority are consolidated at the same level. It's a three-legged stool that becomes a fragile balancing act when one leg is taken away.  Also, there's a whole side discussion to be had on what the alternatives are to the dollar as a reserve currency. The dollar is in that position for a reason." At any instant, three currencies will have exchange rates so if I know the rate between A and B, and B to C, the A to C rate is easily calculated. You need X pounds, so at that moment, you are subject to the exchange rate right then. It's not a deal or bargain, although it may look better in hindsight if the currencies move after some time has passed. But if a currency is going to depreciate, and you have the foresight to know such things, you'd already be wealthy and not visiting here. If you are confident that the US Dollar will recover compared to the Australian Dollar then you could use your Australian dollars (assuming you have some) to buy an ETF that tracks the value of the USD. Then after the USD makes its run (or after the Australian dollar falls) you can cash out and claim victory. If that's not quite your situation, or if you want to learn more Investopedia has a great article that talks more about investing in currency ETFs and mentions a couple other options out there. The money you will be bringing to the US will be classified as your own money, and will not be taxable. The proceeds from the sale are taxable to you, probably as capital gains. The fact that you kept the proceeds out of the US is irrelevant for that purpose (it is relevant for FBAR/FATCA etc). Since you had no basis in the property, all the proceeds are taxable to you at the time of the sale and should be reported on your tax return. "Yes, you're still exposed to currency risk when you purchase the stock on company B's exchange. I'm assuming you're buying the shares on B's stock exchange through an ADR, GDR, or similar instrument. The risk occurs as a result of the process through which the ADR is created. In its simplest form, the process works like this: I'll illustrate this with an example. I've separated the conversion rate into the exchange rate and a generic ""ADR conversion rate"" which includes all other factors the bank takes into account when deciding how many ADR shares to sell. The fact that the units line up is a nice check to make sure the calculation is logically correct. My example starts with these assumptions: I made up the generic ADR conversion rate; it will remain constant throughout this example. This is the simplified version of the calculation of the ADR share price from the European share price:  Let's assume that the euro appreciates against the US dollar, and is now worth 1.4 USD (this is a major appreciation, but it makes a good example):  The currency appreciation alone raised the share price of the ADR, even though the price of the share on the European exchange was unchanged. Now let's look at what happens if the euro appreciates further to 1.5 USD/EUR, but the company's share price on the European exchange falls:  Even though the euro appreciated, the decline in the share price on the European exchange offset the currency risk in this case, leaving the ADR's share price on the US exchange unchanged. Finally, what happens if the euro experiences a major depreciation and the company's share price decreases significantly in the European market? This is a realistic situation that has occurred several times during the European sovereign debt crisis.   Assuming this occurred immediately after the first example, European shareholders in the company experienced a (43.50 - 50) / 50 = -13% return, but American holders of the ADR experienced a (15.95 - 21.5093) / 21.5093 = -25.9% return. The currency shock was the primary cause of this magnified loss.  Another point to keep in mind is that the foreign company itself may be exposed to currency risk if it conducts a lot of business in market with different currencies. Ideally the company has hedged against this, but if you invest in a foreign company through an ADR (or a GDR or another similar instrument), you may take on whatever risk the company hasn't hedged in addition to the currency risk that's present in the ADR/GDR conversion process. Here are a few articles that discuss currency risk specifically in the context of ADR's: (1), (2). Nestle, a Swiss company that is traded on US exchanges through an ADR, even addresses this issue in their FAQ for investors. There are other risks associated with instruments like ADR's and cross-listed companies, but normally arbitrageurs will remove these discontinuities quickly. Especially for cross-listed companies, this should keep the prices of highly liquid securities relatively synchronized."