Africa-Places.com listou aprox 23 bancos dentro Nanyuki. Alguns dos mais bem avaliados bancos dentro Nanyuki estão- Stanbic Bank-Nanyuki, Stanbic Bank-Nanyuki, Family Bank-Nanyuki, Agricultural Finance Corporation-Nanyuki, Maxoil Hotel, National Bank Nanyuki, Equity Bank Nanyuki, Standard Chartered Bank - Agência Nanyuki, Postbank Nanyuki Branch & Standard Chartered Bank - Agência Nanyuki.