we are trying to plan a budget for start-up, is it true to plan a budget for 1 year? or any suggesstions how period of the plan should be?

and then we want to know in which year the revenue is more than cost.

if the plan was for 1 year then this is the cost for the first year, and there is revenue

when we come to the second year we must plan and calculate another budget to use it and compare it with revenue, is this true?

11. Investing What is your planned budget? What kind of money are you looking for? How will you spend it? How we will make money For how much will you sell you product or service? How many units do you plan on selling ? 10. Business model How are you planning to make money? Show a schedule when you expect revenues to pour in