Why is there two currencies in Venezuela's money?
Venezuela is a command economy, and one that isn't doing terribly well right now, with rampant inflation in the several hundred percent range.  As such, they've tried to limit or eliminate exchanges between their currency and foreign currencies. Currently, they allow a limited amount of exchange at fixed rates (according to a Bloomberg article, those vary between 6.3, 13.5, and 200) for certain purchases, and then otherwise disallow exchange between the currencies.  However, there is a black market (illegal in Venezuela, but legal in the US) which allows the price to float, and is much higher - 800 or so according to that article from last year.  A recent Valuewalk article lists the black market rate at closer to 900, and slightly different official rates.  It's worth a read as it explains the different official rates in detail: Currently there are four exchange rates: First is the official one,   called CENCOEX, and which charges 6.30 bolivars to the dollar. It is   only intended for the importation of food and medicine. The next two exchange rates are SICAD I (12 bolivars per dollar) and   SICAD 2 (50 bolivars per dollar); they assign dollars to enterprises   that import all other types of goods. Because of the fact that US   dollars are limited, coupons are auctioned only sporadically; usually   weekly in the case of SICAD 1 and daily for SICAD 2. However, due to   the economic crisis, no dollars have been allocated for these foreign   exchange transactions and there hasn’t been an auction since August   18, 2015. As of November 2015, the Venezuelan government held only $16   billion in foreign exchange reserves, the lowest level in over ten   years, and an amount that will dry up completely in four years time at   the current rate of depletion. The last and newest exchange rate is the SIMADI, currently at 200   bolivars per dollar. This rate is reserved for the purchase and sale   of foreign currency to individuals and businesses.
Here's what the GnuCash documentation, 10.5 Tracking Currency Investments (How-To) has to say about bookkeeping for currency exchanges. Essentially, treat all currency conversions in a similar way to investment transactions.  In addition to asset accounts to represent holdings in Currency A and Currency B, have an foreign exchange expenses account and a capital gains/losses account (for each currency, I would imagine).  Represent each foreign exchange purchase as a three-way split: source currency debit, foreign exchange fee debit, and  destination currency credit. Represent each foreign exchange sale as a five-way split: in addition to the receiving currency asset and the exchange fee expense, list the transaction profit in a capital gains account and have two splits against the asset account of the transaction being sold. My problems with this are: I don't know how the profit on a currency sale is calculated (since the amount need not be related to any counterpart currency purchase), and it seems asymmetrical.  I'd welcome an answer that clarifies what the GnuCash documentation is trying to say in section 10.5. "Fees & liabilities Yes, the first problem is that liabilities are being improperly booked. If the fee you charge is fixed upon deposit then the fee should credit ""Revenue"", the fee charged to you should be booked by crediting cash and then debiting ""Expenses"", and the remaining should be booked as a liability. If the fee is fixed upon withdrawal then this will become more complex because of the fact that a change in the fee can occur before it can be applied.  In this case, the current fee should be credited as ""Revenue"" and some ""Allowance for fee increase"" should also be credited.  The amount owed to the withdrawer should be booked as a liability as before. Multiple currency bookings I will assume that this is for a cryptocurrency service of some sort considering the comments in your question and your presence on bitcoin.se. Accounting can become very dangerous when mixing denominations.  This is why all major accounting standards mandate books be maintained single currency. In your case, if the deposit is in USD, for example, and the liability is in BTC then two books must be maintained, one for each. To account for your operation properly using single currency accounts, the denominations must be exchanged internally and balanced across the two sets of books. For a deposit of BTC/depository of USD, the operation would be the same as described above, but then the cash should be credited away and the liabilities debited away from the USD books with simultaneous cash debits and liability credits on the BTC books. Considering the extreme volatility of cryptocurrency exchange rates, denominating accounts on the wrong set of books will quickly lead to insolvency or loss from improper accounting or both. From revenue to income Revenue can be construed as a liability since it could theoretically exist on the balance sheet. I mention this because all books, despite their name and quarter, are really simply long T accounts, like a blockchain.  A blockchain could be subdivided into users' individual income statements & balance sheets, as the reverse of this concept. Revenues are credited, expenses are debited.  The difference, ""net income"", is debited away with a credit to ""owners' equity""." Although this is off-topic since it is about economics I'm going to write a short answer in case it is decided that it is on topic. I will remove this if it gets migrated. The key to why printing extra money causes inflation and a change in exchange rate has nothing at all to do with whether or not it is announced or done in secret. The quantity of money in circulation (by whichever measure) is what informs the value of the currency not whether you tell people that it has changed or not. Announcing it should increase the volatility somewhat around the time of the announcement but the long term effects will be the same no matter what. Whether or not they announce it printing more money will mean that there is more in circulation which will reduce the value of each unit of the currency by the dilution amount which in turn will increase inflation and decrease the exchange rate. When you want to invest in an asset denominated by a foreign currency, your investment is going to have some currency risk to it. You need to worry not just about what happens to your own currency, but also the foreign currency. Lets say you want to invest $10000 in US Stocks as a Canadian. Today that will cost you $13252, since USDCAD just hit 1.3252. You now have two ways you can make money. One is if USDCAD goes up, two is if the stocks go up. The former may not be obvious, but remember, you are holding US denominated assets currently, with the intention of one day converting those assets back into CAD. Essentially, you are long USDCAD (long USD short CAD). Since you are short CAD, if CAD goes up it hurts you It may seem odd to think about this as a currency trade, but it opens up a possibility. If you want a foreign investment to be currency neutral, you just make the opposite currency trade, in addition to your original investment. So in this case, you would buy $10,000 in US stocks, and then short USDCAD (ie long CAD, short USD $10,000). This is kind of savvy and may not be something you would do. But its worth mentioning. And there are also some currency hedged ETFs out there that do this for you http://www.ishares.com/us/strategies/hedge-currency-impact However most are hedged relative to USD, and are meant to hedge the target countries currency, not your own. what are you talking about, the wealthy are not just tied to money. Alot of it is assets, physical metals, and properties  currency switches happen every 40 years or so btw, which is the case lately in the past couple of centuries. "That oil is traded in USD makes for extra demand and thus a stronger dollar with more purchasing power. It's not really economics that are the issue though - many might argue a weakened dollar might help the US economy (cheaper exports).  The real issue is power. These gold backed securities make it so that certain countries can get around US sanctions.  Not to mention that controlling the currency that oil is traded in means the US can devalue their currency to gain an advantage in the event of a shortage.  Also, because petroleum is traded in dollars, this means treasury bonds are a natural place to store wealth for oil producers. High demand for these bonds makes it cheap for the US government to borrow and easier to make interest payments thus making T-Bonds a ""safe"" asset." "Other than the inconvienent fact that Treasury cannot sell to the Fed by law your theory is nice. You forget the step where the open market buys from the Treasury since they desire bonds to invest in, and the Fed can buy only from the open market.  Secondly, the Fed does not give cash to the Treasury. The mint (a branch of the Treasury, not the Fed) prints cash.  So it seems your understanding of how the money system works is quite wrong, yet since this is the Economy subreddit instead of the Economics subreddit, I expect you to get upvotes for saying what is popular even though it is laughably incorrect.  You seem to not like cash that was not ""even existing previously"". All cash was not existing previously. How do you expect people to make transactions? Barter?  You call them interest free loans (but above claimed they will never be paid back?), but then the Fed is making a profit on them? It seems you contradict yourself with all that handwaving.  It would be interesting for you to explain how (and why) money (not cash) gets added and removed to the economy.   Yay for ignorance!" "Well there are a couple reasons that people from various countries use specific currencies:  1.  Government courts will recognize the settlement of contracts if they are paid with their local currency.  So even if you wanted to be paid in Swiss Francs, your contracting partner can choose to pay you in USD instead.  This artificially inflates the value of the local currency by increasing demand for it.  2.  You're only allowed to pay your taxes in the local currency.  This also artificially increases the demand for it, and it's the ""root value"" of the currency - people clamor for bits of green paper because if they don't have enough of it to pay off the tax man, they'll go to jail."