Is it a problem to purchase a boat in La and retitle it in Tx?

No problem as long as you have titles.

And you’ll pay sales tax when you get your Texas title.

I bought mine in LA. The boat was no problem. LA has a strange title. The title for mine was on the back of the boat registration. I had to do a pencil tracing of the serial number on the boat. If you can't do that then a GW has to inspect it. Trailer was the biggest issue. The trailer title did not have a weight on it. When I went to the register the trailer they gave me a list of what I needed to transfer the title and register it. The lady was fairly new and forgot to tell me that I needed to weigh it. Kind of ticked me off because i drove right padt Loves to get the inspection and required another trip to the tax office. From what I hear from some people I guess I was fortunate. I took the weigh ticket back and the young lady asked an older more experienced lady about and she said that I need empty weight. I knew the empty hull and motor weights so they let me calculate the empty trailer weight. Every vehicle or trailer purchased out of state has to be inspected in Texas.

a picture will work for hin id, that is how I did mine (boat was with me when I titled things).

stump jumper laid it out good, weigh trailer (you don't have to title it in Tx, less than 4k capacity can just be registered). get the paperwork from tax office and tpwd and be sure it is filled out right.

bought my current boat in missouri and no problem with transfer here.