The answer is $530.83.
Given,
For the entire calendar year, Bill pays his $980 property tax bill.
On June 28, Bill formally executes a purchase and sell agreement.
The sale is completed by Bill on July 15.
According to the contract, the seller is in charge of the closing day costs.
A 360-day year is assumed.
Number days till the date of closing = Till June 30 + till July 15
= (360/2) + 15
= 180+15
= 195 days
Therefore, tax paid by Bill till this date will be Prepaid tax.
Amount of prepaid tax = (Total amount of tax/number of days in the year) * Number days till the date of closing
Substituting the values in the above formula,
Amount of prepaid tax = ($980/360) * 195
= $530.833
Hence, the amount of prepaid taxes due back to Bill at closing is $530.83.
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