# Change rates between RMB and U.S. dollars for money transfer between China and U.S

Let R_1 be the change rate from RMB to US dollars when transferring money from China to U.S., and R_2 the rate from US dollars to RMB when transferring money from U.S. to China.

Are R_1 and R_2 exactly reciprocal to each other? i.e. is R_1 = 1/R_2? If not, why?

Does the relation between R_1 and R_2 depend on the specific banks in China and in U.S.? For example, R_1 is from bank C1 in China to bank A1 in U.S, and R_2 is from bank A2 in U.S. to bank C2 in China.

Are the transfers for both directions done in banks in china, or in banks in U.S.?

• R_1 and R_2 aren't likely to be reciprocals as most places that do conversions will add a bit of a buffer to the rates they use and thus if you took \$1 US and converted to a foreign currency and converted it back you may end up just under a dollar,e.g. 99.9 cents which may get rounded back to a whole dollar but isn't exactly where you started. Commented Oct 15, 2013 at 23:05