Some factors that affect the cost of installing a bathtub include whether it is a freestanding tub, wall-to-wall tub or drop bathtub. A freestanding tub installation ranges in price from $500 to $750 while a wall-to-wall tub costs about $600 to $650, as of 2015. A drop bathtub installation can cost between $950 to $1,750, depending on the size and dimensions.
Some common upgrades, including installing a deeper tub or a tub with whirlpool jets, can increase the price of installation. If bathroom walls need to be demolished or if tiles need to be removed, the price of installation increases. Another unforeseen expense is the addition of an extra or new water heater if the tub is considerably larger than the old one.