The ANZ Bank is next to the market, and the Westpac Bank is farther up the same way, near the T-junction with the circuminsular road. The ANZ Bank has an ATM. The National Bank of Samoa (weekdays 0900-1500, Saturday 0830-1130) and the Samoan Commercial Bank are in Blue Bird Mall.
Outside Salelologa there's nowhere to change money although some of the resorts accept credit cards. Most businesses on the island accept Samoan cash only.
The Salafai Medical Clinic (weekdays 0800-1630, Saturday 0800-1200) in Blue Bird Mall sees tourists.
Public telephones and the post office (weekdays 0830-1200/1300-1630) are in Blue Bird Mall.
The Savai'i Travel Centre opposite the Westpac Bank provides Internet access. Look for the Western Union sign; they're in the same office. A laundromat is also here.
A Public Library (weekdays 0900-1200/1300-1530) is just up the street directly behind the market.