Making a budget for a home business start-up is more of an art than it is a science. No matter how exactly you think youve pinned down all your expenses, its guaranteed that more will appear that you either didnt think of or just couldnt have predicted. Thats why you need to make sure that you always plan for every possible expense.
Things Break.
Remember that any equipment you buy can go wrong, no matter how expensive or high-quality it was (this is especially true of anything IT-related!) When things break, you probably wont need to buy a new one, but youll at least have to wait for the manufacturer to replace what broke. This can lead to days of lost or less-efficient business, and cost you money. Budget for equipment failures.
People are Unpredictable.
When you hire staff, you have no way of knowing that they arent going to let you down. You might have worked out that it takes $200 to train one new staff member, but what do you do when that newly-trained staff member quits and moves to France after three weeks at the job? Youve got no choice but to train someone else and take the loss. Budget for staff turnover.
The World is Against...