The Dometic Part-Timer RV Toilet - Low Profile - Round Bowl - Slow Close Lid - White Ceramic Item # DOM67FR does not come with a holding tank.
If you are looking for a toilet with a holding tank I recommend the Dometic Portable Camping Toilet - 5 Gallon Tank - Gray Item # DOM44FR. This portable toilet is light weight enough to move around and easily separates from the tank for emptying. view full answer...