What is the best way to handle a client who says "this will lead to more work later"?

[Btaliat]

This is truly a good news but to be handled with care. It is a good thing that the clients will like to work with you in the future. You must have performed incredible tasks. However, you need to let him know that the rate for the next contract will be determined by the nature of the task. You don't need to create too much familiarity with clients. Doing this will make it easier to understand each other better.

 

[Edward22]

Set your rate. Do good work. If more comes, great. But never change what you charge based on a vague promise. The future work they are describing doesn't exist yet. Price for what's in front of you right now.

 

[SuperAffiliateX]

One thing I will say is that you should focus on providing maximum satisfaction for the client and put your mind off the claim. Some of them are doing this so that you'll be able to put your maximum effort in the gig so that you'll be able to convince them to retain you.