I dont have a 1098 for my mortgage i bought the house in december

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Assuming you made no mortgage payment in December in which to deduct mortgage interest, you may not receive a 1098 although you should check with your lender.

However, you may be able to deduct mortgage interest paid and/or property tax as designated on your closing statement-HUD-1

See https://ttlc.intuit.com/questions/2926908-what-information-do-i-need-from-my-hud-statement