Does your business use QuickBooks Desktop?
In general, we recommend that you have one of the three most recent year versions. For example, in 2019, you’d want to make sure you are using the 2019, 2018, or 2017 version of Quickbooks.
Intuit only supports the three most recent years, and if you’re not using one of those versions, then you could be vulnerable to hackers.
You don’t need to upgrade every year, but sometimes QuickBooks releases new features that may be of interest to you. Here’s what’s coming in 2020 — https://www.accountingtoday.com/news/quickbooks-desktop-2020-offers-increased-automation-and-more