Keep your business and personal finances separate. Here’s how to choose a business checking account—and why separate business accounts are essential. When you open a business bank account, you’ll need to provide your business name and your business tax identification number (EIN). This business bank account can be used for your business transactions, such as paying suppliers or invoicing customers. Most times, a bank will require a separate business bank account to issue a business loan or line of credit.

If you sell a product, you need an inventory function in your accounting software to manage and track inventory. The software should have ledger and journal entries and the ability to generate financial statements.

Some software programs double as bookkeeping tools. These often include features such as check writing and managing receivables and payables. You can also use this software to track your income and expenses, generate invoices, run reports and calculate taxes.

There are many bookkeeping services available that can do all of this for you, and more. These services can be accessed online from any computer or mobile device and often include features such as bank reconciliation and invoicing. Check out the best accounting software for small business, or see if you want to handle the bookkeeping yourself.

Before you fund your business, you must get an idea of your startup costs. To determine these, make a list of all the physical supplies you need, estimate the cost of any professional services you will require, determine the price of any licenses or permits required to operate and calculate the cost of office space or other real estate. Add in the costs of payroll and benefits, if applicable.

Businesses can take years to turn a profit, so it’s better to overestimate the startup costs and have too much money than too little. Many experts recommend having enough cash on hand to cover six months of operating expenses.

When you know how much you need to get started with your business, you need to know the point at which your business makes money. This figure is your break-even point.

In contrast, the contribution margin = total sales revenue – cost to make product

For example, let’s say you’re starting a small business that sells miniature birdhouses for fairy gardens. You have determined that it will cost you $500 in startup costs. Your variable costs are 40 cents per birdhouse produced, and you sell them for $1.50 each.

Let’s write these out so it’s easy to follow:

This means that you need to sell at least 456 units just to cover your costs. If you can sell more than 456 units in your first month, you will make a profit.