Do I need to amend my 2017 tax returns if I have now received a new form 1098 from my bank listing an amount in Box 5 Mortgage ins premiums (earlier form had it blank)?

 

After you file

Yes, If you itemized you may benefit from entering 1098 mortgage insurance premium.

Can I deduct mortgage insurance (PMI or MIP)? https://ttlc.intuit.com/replies/3301952
Do I need to amend? https://ttlc.intuit.com/replies/3318732
Hope its help