As preparers, we have a duty to review the tax returns before we release them.

Yes our software should be accurate, but the buck stops with us. Somewhere in the fine print of our purchase agreement and/or license Intuit also tells us this.

I have no expectation that Intuit will reimburse penalty and interest. But you can try asking.

Do lots of people actually have taxable state tax refunds these days? With the $10,000 SALT limitation I rarely see a taxable refund (nor did I in the old AMT days).