On the other hand you can choose to cut the door jamb as to lay the tile under it.
How to cut tile under door jambs.
I made a quick video on how to undercut door jambs for laminate flooring it is a diy job most people could undertake themselves if the have some basic tools.
How to undercut and fit ceramic tiles around door casings and jambs.
As an alternative you can use a multi tool oscillating tool with an undercut attachment.
First of all you will need a scrap of laminate and then a scrap of the pad that will go under the laminate.
Put a tile on the plywood subfloor.
Use a handsaw to cut through the door jamb or casing.
Set the saw flat on top of the tile and simply work it back and forth to cut the casing at the tile height.
Place a scrap of backer board on top of the tile.
You can use a variety of tools and i will show them in the video below.
Cut through the door jamb with the handsaw which should fall on the pencil mark you drew.
You will need to both of these to cut the proper height of the jamb.
If you do this without the pad then the jamb will be too tight for the laminate to flow freely.
To trim door jambs and casings for tile on a wood subfloor.
If you prefer the second technique you have to use a pull saw.
On one hand you can mark the tile and cut it out as to fit around the wooden jambs.
Attach the cement backer board to the floor extending.
Generally speaking there are two main techniques related to installing tile around door jambs.
4 pull the tile and cardboard away from the door.
To use an undercut saw place a tile on the floor with a spacer beneath to represent the tile mortar and hold the tile against the casing.
Lay a handsaw on top of the tile parallel to the floor.
Remove the cut scrap of door jamb or casing.
For larger jobs or longer cuts an undercut saw will be.