PayPal Canada charges a different fee (percentage and plus charge) depending on where you received your fund from. For example, if the transaction is from United States and the currency is USD, PayPal will charge 3.7% plus $0.30 USD (yes, they will charge you in USD!).

All products/solutions PayPal provides have local and international charge. Some products have a different fee for US transaction and transaction for other countries.

Example, if you are using the standard PayPal checkout and got paid by an Canadaian buyer, you will be charged 2.9% plus fixed fee.
If you got paid by a US buyer, you will be charged 2.7% plus fixed fee.
If you got paid by a buyer from other countries, you will be charged 3.9% plus fixed fee.

For more information on PayPal Canada fees, check out PayPal Canada's website.

PayPal standard fee

From	Normal Rate
Canada	2.9% + $0.30 CAD
United States	3.7% + a fixed fee based on the currency
Other countries	3.9% + a fixed fee based on the currency

Charity

From	Normal Rate
Canada	1.6% + $0.30 CAD
Other countries	2.6% + a fixed fee based on the currency

Micropayments

From	Normal Rate
Canada & USA	5% + $0.05 CAD
Other countries	6% + a fixed fee based on the currency

PayPal Here

From	Normal Rate
Canada	Keyed Transactions - 3.5% + $0.15 CAD PayPal Transactions - 2.7% Swiped Transactions - 2.7%
Other countries	Keyed Transactions - 4.5% + $0.15 CAD PayPal Transactions - 3.7% Swiped Transactions - 3.7%

Virtual Terminal

From	Normal Rate
Canada	3.1% + $0.30 CAD
USA	3.9% + a fixed fee based on the currency
Other countries	4.1% + a fixed fee based on the currency