Can I file business 2018 tax return on this software or do I have to use another software?

Hey there, Bbsmasonry719.

If you're signed up for e-file, you can file tax forms directly in QuickBooks Online. 

I'll guide you on how to open the forms:

1. Click Taxes.
2. Choose Payroll Tax.
3. Under Forms, you can either choose Quarterly Forms or Annual Forms.
4. Choose the specific forms, then submit.

Though, if you're unable to sign up, you can manually submit the forms or file it directly to the government's website. 

If you have more questions, just leave a comment below.