Accounting for currency depreciation
Yes - it's called the rate of inflation. The rate of return over the rate of inflation is called the real rate of return.   So if a currency experiences a 2% rate of inflation, and your investment makes a 3% rate of return, your real rate of return is only 1%. One problem is that inflation is always backwards-looking, while investment returns are always forward-looking. There are ways to calculate an expected rate of inflation from foreign exchange futures and other market instruments, though. That said, when comparing investments, typically all investments are in the same currency, so the effect of inflation is the same, and inflation makes  no difference in a comparative analysis.  When comparing investments in different currencies, then the rate of inflation may become important.
I have been following some of these threads. Some of them are really old. I have read used recording to equity accounts to resolve the imbalance USD issue. The thing I noticed is that all my imbalances occur when paying bills. I took all the bills and set them up as vendor accounts, entered the bills in the new bills, and used the process payment when paying bills. The imbalance issue stopped. It makes sense. The system is a double entry. That's it will credit and debit. Assets accounts are increased with a debit and decreased with a credit. Equity accounts are increased with a credit and decreased with a debit. ie; Say you have an monthly insurance bill for $100. You enter it into the new vendor bill. This credits Accounts Payable. When paying the bill it credits checking, debits account payable, credits vendor account, debits the expense insurance. In short for each credit there has to be a debit for the books to balance. When there is no account for it to record to it will record in Imbalance USD to balance the books. Straight line depreciation is marginal as far as I understand. It would be a flat expense each year. Unless you mean 2 mil year one and 4 mil for years one and two combined and it's just written ambiguously here. It seems pretty straight-forward to me. 10 mil rev per year operating increase. 6.5 mil operation expense increase. Net income= rev-expenses. Depreciation expense is not an operating expense. As far as relevant cash flows I guess if there's not omitted info in this post would just be the cash for the initial investment, the added expenses, the added revenue, the salvage sale. If you're audited routinely you probably have an accountant to get this straight. It's not something that I would be too worried about as it is purely journal-entry issue, there's no problem with the actual money. Mistakes happen. I'd suggest converting the currency, taking loss/gain on the conversion as a capital loss/gain, and credit the correct currency to the correct account. If GnuCash causes problems - just record it in the EUR equivalent, putting in notes the actual SGD value. Note that I'm not an accountant and this is not a professional advice. How can I calculate my currency risk exposure?  You own securities that are priced in dollars, so your currency risk is the amount (all else being equal) that your portfolio drops if the dollar depreciates relative to the Euro between now and the time that you plan to cash out your investments. Not all stocks, though, have a high correlation relative to the dollar.  Many US companies (e.g. Apple) do a lot of business in foreign countries and do not necessarily move in line with the Dollar.  Calculate the correlation (using Excel or other statistical programs) between the returns of your portfolio and the change in FX rate between the Dollar and Euro to see how well your portfolio correlated with that FX rate.  That would tell you how much risk you need to mitigate. how can I hedge against it?  There are various Currency ETFs that will track the USD/EUR exchange rate, so one option could be to buy some of those to offset your currency risk calculated above.  Note that ETFs do have fees associated with them, although they should be fairly small (one I looked at had a 0.4% fee, which isn't terrible but isn't nothing). Also note that there are ETFs that employ currency risk mitigation internally - including one on the Nasdaq 100 .   Note that this is NOT a recommendation for this ETF - just letting you know about alternative products that MIGHT meet your needs. Huh. It appears it's only currencies in sterling that are fully exempt. https://www.gov.uk/hmrc-internal-manuals/capital-gains-manual/cg12602   Government manuals are more detailed than .gov but still not perfect as it's HMRCs interpretation of legislation and has been overturned in the past.  There is also another (old) article here about foreign currency transactions. https://www.taxation.co.uk/articles/2010/10/27/21191/currency-gains  I have never come across forex capital gains in practice but I've learnt something today! Something to look out for in the UK as well I guess. It depends on the asset and the magnitude of the exchange rate change relative to the inflation rate. If it is a production asset, the prices can be expected to change relative to the changes in exchange rate regardless of magnitude, ceteris paribus. If it is a consumption asset, the prices of those assets will change with the net of the exchange rate change and inflation rate, but it can be a slow process since all of the possessions of the country becoming relatively poorer cannot immediately be shipped out and the need to exchange wants for goods will be resisted as long as possible. 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. Is there not some central service that tracks current currency rates that banks can use to get currency data? Sure.  But this doesn't matter.  All the central service can tell you is how much the rate was historically.  But the banks/PayPal don't care about the historical value.  They want to know the price that they'll pay when they get around to switching, not the last price before the switch.  Beyond that, there is a transaction cost to switching.  They have to pay the clearinghouse for managing the transaction.   The banks can choose to act as a clearinghouse, but that increases their risk.  If the bank has a large balance of US dollars but dollars are falling, then they end up eating that cost.  They'll only take that risk if they think that they'll make more money that way.  And in the end, they may have to go on the currency market anyway.  If a European bank runs out of US dollars, they have to buy them on the open market.  Or a US bank might run out of Euros.  Or Yen.  Etc.   Another problem is that many of the currency transactions are small, but the overhead is fixed.  If the bank has to pay $5 for every currency transaction, they won't even break even charging 3% on a $100 transaction.  So they delay the actual transaction so that they can make more than one at a time.  But then they have the risk that the currency value might change in the meantime.  If they credit you with $97 in your account ($100 minus the 3% fee) but the price actually drops from $100 to $99, they're out the $1.   They could do it the other way as well.  You ask for a $100 transaction.  They perform a $1000 transaction, of which they give you $97.  Now they have $898 ($1000 minus the $5 they paid for the transaction plus the $3 they charged you for the transaction).  If there's a 1% drop, they're out $10.98 ($8.98 in currency loss plus a net $2 in fees).   This is why banks have money market accounts.  So they have someone to manage these problems working twenty-four hours a day.  But then they have to pay interest on those accounts, further eating into their profits.  Along with paying a staff to monitor the currency markets and things that may affect them. Evaluating the value of currencies is always difficult because you are usually at the mercy of a central bank that can print new currency on a whim. I am trying to diversify my currency holdings but it is difficult to open foreign bank accounts without actually being in the foreign country.  Any ideas here? You don't indicate which currencies you own but I would stick with your diversified portfolio of currencies and add some physical assets as a hedge against the fiat currencies. Here is the technical guidance from the accounting standard FRS 23 (IAS 21) 'The Effects of Changes in Foreign Exchange Rates' which states: Exchange differences arising on the settlement of monetary items or on translating monetary items at rates   different from those at which they were translated on initial recognition during the period or in previous   financial statements shall be recognised in profit or loss in the period in which they arise. An example:  You agree to sell a product for $100 to a customer at a certain date. You would record the sale of this product on that date at $100, converted at the current FX rate (lets say £1:$1 for ease) in your profit loss account as £100. The customer then pays you several $100 days later, at which point the FX rate has fallen to £0.5:$1 and you only receive £50. You would then have a realised loss of £50 due to exchange differences, and this is charged to your profit and loss account as a cost. Due to double entry bookkeeping the profit/loss on the FX difference is needed to balance the journals of the transaction. I think there is a little confusion as to what constitutes a (realised) profit/loss on exchange difference. In the example in your question, you are not making any loss when you convert the bitcoins to dollars, as there is no difference in the exchange rate between the point you convert them. Therefore you have not made either a profit or a loss.  In terms of how this effects your tax position; you only pay tax on your profit and loss account. The example I give above is an instance where an exchange difference is recorded to the P&L. In your example, the value of your cash held is reflected in your balance sheet, as an asset, whatever its value is at the balance sheet date. Unfortunately, the value of the asset can rise/fall, but the only time where you will record a profit/loss on this (and therefore have an impact on tax) is if you sell the asset. "This formula is not calculating ""Earnings"".  Instead, it is calculating ""Free Cash Flow from Operations"". As the original poster notes, the ""Earnings"" calculation subtracted out depreciation and amortization.  The ""Free Cash Flow from Operations"" adds these values back, but for two different reasons:" The closest thing that you are looking for would be FOREX exchanges. Currency value is affected by the relative growth of economies among other things, and the arbritrage of currencies would enable you to speculate on the relative growth of an individual economy. "Like Jeremy T said above, silver is a value store and is to be used as a hedge against sovereign currency revaluations.  Since every single currency in the world right now is a free-floating fiat currency, you need silver (or some other firm, easily store-able, protect-able, transportable asset class; e.g. gold, platinum, ... whatever...) in order to protect yourself against government currency devaluations, since the metal will hold its value regardless of the valuation of the currency which you are denominating it in (Euro, in your case).  Since the ECB has been hesitant to ""print"" large amounts of currency (which causes other problems unrelated to precious metals), the necessity of hedging against a plummeting currency exchange rate is less important and should accordingly take a lower percentage in your diversification strategy.  However, if you were in.. say... Argentina, for example, you would want to have a much larger percentage of your assets in precious metals. The EU has a lot of issues, and depreciation of hard assets courtesy of a lack of fluid currency/capital (and overspending on a lot of EU governments' parts in the past), in my opinion, lessens the preservative value of holding precious metals.  You want to diversify more heavily into precious metals just prior to government sovereign currency devaluations, whether by ""printing"" (by the ECB in your case) or by hot capital flows into/out of your country.  Since Eurozone is not an emerging market, and the current trend seems to be capital flowing back into the developed economies, I think that diversifying away from silver (at least in overall % of your portfolio) is the order of the day. That said, do I have silver/gold in my retirement portfolio?  Absolutely.  Is it a huge percentage of my portfolio?  Not right now.  However, if the U.S. government fails to resolve the next budget crisis and forces the Federal Reserve to ""print"" money to creatively fund their expenses, then I will be trading out of soft assets classes and into precious metals in order to preserve the ""real value"" of my portfolio in the face of a depreciating USD. As for what to diversify into?  Like the folks above say: ETFs(NOT precious metal ETFs and read all of the fine print, since a number of ETFs cheat), Indexes, Dividend-paying stocks (a favorite of mine, assuming they maintain the dividend), or bonds (after they raise the interest rates).  Once you have your diversification percentages decided, then you just adjust that based on macro-economic trends, in order to avoid pitfalls. If you want to know more, look through: http://www.mauldineconomics.com/ < Austrian-type economist/investor http://pragcap.com/ < Neo-Keynsian economist/investor with huge focus on fiat currency effects" QE2 will mean that there are about $500 billion dollars in existence which weren't there before. These dollars will all be competing with the existing dollars for real goods and services, so each dollar will be worth a little less, and prices will rise a little. This is inflation. You can probably expect 1.5%-2% annual inflation for the US dollar over the next several years (the market certainly does in the aggregate, anyway). This is in terms of US-based goods and services. QE2 will also reduce the amount of other currencies you can get for the same dollar amount. The extent to which this will occur is less clear, in part because other currencies are also considering quantitative easing. Your long-term savings should probably not be in cash anyway, because of the low returns; this will probably affect you far more than the impact of quantitative easing. As for your savings which do remain in cash, what you should do with them depends on how you plan to dispose of them. The value of a currency is usually pretty stable in terms of the local economy's output of goods and services - it's the value in international trade which tends to fluctuate wildly. If you keep your savings in the same currency you plan to spend them in, they should be able to maintain their value decently well in the intermediate term. "No money is gone.  The movement of the existing currency has slowed down.  Currency moves through the economy through deposits or loans to banks, and withdrawal from banks as proceeds from loans or return of deposits.  When a bank makes a loan they provide a balance in a bank account, which isn't converted to hard currency until withdrawn.  So those bank loans essentially count as currency, and thus effectively multiply the stock of currency available.  Deposits into money market funds, and those funds loans into the commercial paper markets, have the same effect.  Banks and money funds are now making fewer loans.  In particular they are not funding ""companies"" that invested in securitizations of home mortgages and credit card receivables, but they are also lending less to businesses and consumers.  Because they are lending less they are ""effectively multiplying"" the currency less.   Think of deposited and lent currency as spare cycles on a desktop computer.  You let your computer help decipher the genome when you aren't using it yourself.  If you somehow feared that you would lose those cycles, slowing down your own computing, you would be less likely to lend those cycles out.  There would still be the same number of computing cycles in the world, but the stock of those available for actual computing would appear to be diminished.  The technical term for this concept is ""monetary velocity"" and it is a crucial factor in determing the level of overall economic activity, banking stability, and inflation."