i need google sheet expert

i need someone who can help me create 1 google sheet for my whole company, ranging from: 1. sheet to track all income and expenses (total amount only) like i input one amount, auto calculate nett and gross profit 2. a sheet to track my freelancer’s salary (this must include freelancer name, commission rate (30% or 20%, or fixed amount, which project is related to) and this step must be able to keep reuse and reuse from mth to mth 3. a sheet to calculate any other things , please suggest