Throughout the entire Matrix system, anytime you see an amount of money, whether it is a list/closed price or the amount of taxes on a particular property, it will always be in a whole dollar amount. Matrix is not designed to handle cents, so you will never be able to enter anything to the right side of a decimal point.
For instance, when you are entering the property taxes for your listing, Matrix will only accept the amount in dollars. If you try to enter cents, you will get an error when trying to save your work. You must round up/down to the nearest whole dollar amount.
For a tax amount of $1234.67, you should enter $1,235
For a tax amount of $1,234.32, you should enter $1,234