Can anyone explain what I should put in property tax info page? What is land value vs improvement value? On my property tax form all I have is the total/taxable value.

[Critter-3]

If you are trying to enter the property taxes you paid then simply enter what you actually paid and stop looking  at the very confusing tax bill.  

[Carl]

Are you being asked for the property tax information for a rental property you are setting up for the very first time?

Land Value = Typically, this is the tax value of the land only, as if there is no structure of any type on the property.

Improvement Value = Typically, this is the value of the structure(s) on that land.  Usually, but not limited to, a house, trailer, or other structure that one can live in.

Total Value = Typically, this is the tax value total of the land and structure(s) together.

[Opus 17]

If you are placing property in service for a business (including rentals) you depreciate the buildings and other structures attached to the land (it's basically an annual deduction for wear and tear).  However, land does not depreciate—it doesn't lose value just because you use it in business.

You need an accurate estimate of the value of the land vs the value of the property attached to the land.  Sometimes this is reported on your property tax bill (but even when it is, you should not take that as gospel, but verify it).  If you don't have the figures handy, you will need to obtain a valuation from a real estate professional, such as an appraiser.