There comes a time when just about every reasonably successful startup gets an exit opportunity. For founders, these moments are triumphant. You’ve dedicated years of your life to building something, and now somebody wants to pay you a lot of money for it. That’s not only rewarding, it’s also validating.

Trouble is, an offer is just the first step in an exit process. Selling a company takes time and effort, and entrepreneurs often can’t spare either of those.

Here are four steps to take after a buyer comes knocking — but before you begin serious talks.

1. Get a Letter of Intent. Before you spend time working on a potential deal you need to confirm that the buyer’s interest is real. A written LOI, or term sheet, will provide an early gut check, confirming the buyer is serious and that the two sides aren’t too far apart on price. It also shows you’re not in a hurry to sell, which might help you negotiate a better price.

2. Understand What You Want. That term sheet isn’t only about numbers. It will also determine the human outcomes: are you looking to cash out and take a permanent vacation? Or do you want to keep working on your business, but as part of another, presumably larger, organization? In that case, are you ready to go to work for someone else? The answers to these questions will inform discussions of capital structure and earn-outs. Thinking through all of your motivations and desires from the get-go will ultimately help you determine whether the deal is right for you.

3. Ask for a Breakup Fee. It’s not standard in today’s market, but there’s a legitimate business case for requesting a breakup fee. If you’re going to take valuable time away from your business to work on a deal, you have every right to ask for compensation should the buyer back out. While most suitors will push back and some may not agree to it, it can’t hurt to ask. And again, if nothing else, it shows you’re not desperate to sell.

4. Get Help. At the end of the day, every big decision involving the sale of a business falls to its founder. But every founder needs help reaching those decisions. Trusted advisors, as well as key employees and shareholders, will not only help you find the right answers, but make sure you’re asking the right questions as well.