@Lynn278,
Airbnb pays a gross tax amount to each municipality, and generally does not provide hosts individual tax payout information. The closest bit of information that you will find is the tax collection information on your payout page.
I did look up HB 448, which is the law that was enacted on April 1, 2020 that requires "marketplace innkeepers" (Airbnb, Hotels.com, Booking.com, etc.) to collect and remit taxes on behalf of the bookings made on their platforms: http://www.legis.ga.gov/Legislation/en-US/display/20192020/HB/448
I don't know why Lamar County is requiring you to provide proof of payment, because my interpretation of the Bill is that they should be contacting the marketplace innkeeper for this information.
In section 3 starting on row 76 it says, "6 (a) A marketplace innkeeper shall constitute the innkeeper with respect to the transactions taxable pursuant to this article that it facilitates on behalf of another person. All taxes levied or imposed by this article on transactions facilitated by a marketplace innkeeper shall be paid by the purchaser to the marketplace innkeeper.
(b) The marketplace innkeeper shall remit all taxes in the manners provided in this article and, when received by the taxing authority, such taxes shall be credited against the taxes imposed by this article on the furnishing for value to the public any room or rooms, lodgings, or accommodations.
(c) Each marketplace innkeeper shall be liable for the full amount of taxes levied or imposed by this article on its transactions or the amount of tax collected by such marketplace innkeeper from all purchasers on all such transactions, whichever is greater.
Starting on row 93 it says, "(f) A person shall not be obligated to collect and remit or be liable for the taxes levied or imposed by this article on any transaction for which its marketplace innkeeper is obligated and liable.
(g) The taxing authority shall only audit the marketplace innkeeper for sales made by it on behalf of another person except to the extent the marketplace innkeeper seeks relief through subsection