I'm doing more and more of what JohnH does. Used to think I needed the face-to-face interview, but learned that receiving the hard copy and having hard copy of what I told them (well, electronic but printable if needed) is really more important. I build a fee into my tax prep fee to cover those questions throughout the year. I do want them to contact me BEFORE they do something with tax consequences, so I try not to bill extra. I adjust their tax prep fee each year as I get to know their needs better. If I don't feel used, the fee stays the same. If I was feeling put upon during the year, next year's fee goes up. Sometimes I detail the reason, sometimes something vague like Bookkeeping or IRS inquiry or..., sometimes it's just less of a discount or I refer to some tax law change when I talk with them. But, I try to have only one bill per year so they feel like they are receiving service from me during the year as opposed to paying those 15-minute increments like their lawyer charges.