Bills are accepted usually only up to 20$, so better don’t bring any bigger money into the country.
Ecuadorian coins are used as well in the country alongside US ones, though the ecuadorian ones don’t have a value outside of Ecuador.
In most shops and restaurants credit cards are accepted.
At ATMs you are able to withdraw usually 300$ to 500$ at a time, with a daily limit of 600$.
Try to use ATMs at bigger bank buildings with several machines. There you will most likely find the larger deposit ATMs, which, in our experience, more often don’t charge any withdrawal fees. If they do, it depends on the bank how much money they charge. Anything from 1.50$ (Banco Guayaquil) to 4.48$ (at Banco Pichincha) is possible. Stand alone ATMs in touristy areas or in corner kiosks most definitely charge, so it’s always a good tip to withdraw money directly at banks.
Also, when traveling in rural areas, bring cash, since there are often no options nearby.
A small extra wallet just for coins might also come in handy. To pay small amounts like for taxis or snacks that can be kept in an easy accessible front pocket.
The Colombian peso is the country’s legal tender. It is generally identified with the abbreviation COP, and you’ll find that the official peso symbol ($) is used locally.
A wide selection of banknotes and coins are used. You will find 50, 100, 200, 500 and 1,000 peso coins and 1,000, 2,000, 5,000, 10,000, 20,000, 50,000 and 100,000 peso banknotes.
Nuevo Peruvian Soles and US Dollars are widely accepted in Peru. However, there may be a slight disadvantage when paying with USD. The cost of a product or service could be slightly higher if you hand over the money in USD. Although usually not a significant amount. But if you have any doubt, ask before you agree to the terms of payment and know what the up-to-date exchange rate is.