I turn away any job when the client refuses to pay anything up front. It sends a red flag. I also charge a scheduling fee which is non-refundable. I get 33 percent when I show up and begin work. Another percentage halfway through, and the balance upon completion after client is satisfied. There needs to be skin in the game for both parties as a measure of good faith. If you are dealing with a reputable company (did your due diligence, right?) why wouldn't you want to pay something as work progresses? We do this not only because we love to paint but we require cash flow to stay in business. There is not always 'money in the bank' as you suggest. It's tough these days. The suggestion buy 'Kim' 'Never pay a contractor a deposit' is nonsensical.
Sorry it is difficult to trust almost anyone in the trades. It is easier to do the work myself and not deal with strangers in and around my house. When I have to hire someone I tell them up front that I'll be checking every detail, pay extra to purchase the materials myself, and if they don't want the job - well good! I always fine someone who will work with me as I pay a bonus for that.
One of the most popular painting applications in the industry, ColorSnap suggests colors that will work in at your job site. Simply take a picture of the room, entryway or whatever else, and the software will find up to eight colors that will create a beautiful space. In addition, the program will suggest coordinating colors and help you locate the nearest Sherwin-Williams store.
I was a painting contractor for many years and never asked for a deposit upfront. A good contractor should have great credit with his suppliers and an even better contract if the deal should go south before the job is done. Get to know your customer and explain how each paint covers so they understand fully before you have to apply 3 or 4 coats. If you didn't bid your job right and the client has already signed the contract then that is on you not the client. Yes I haven had to eat the difference but the client was happy and a return customer for years so I made up for it.