Long-term (4–12 months)
Step-by-Step: How to Safely Update and Use Prior-Year Software
This is a feature, not a bug. It's the "dual-mode" interface designed to help users transition between the old and new tax laws. Use the 2018 mode for any work related to 2018 taxes, such as corrections, and the 2019 mode for filing new returns under the updated system. wwwxx 2018 tax app upd
Consult Deloitte Intela for professional-grade document management. IRS2Go - App Store - Apple
The 2018 tax year was unique due to major legislative overhauls. In the U.S., the TCJA introduced the most significant changes to the tax code in decades, including nearly doubling the standard deduction and eliminating personal exemptions. Long-term (4–12 months) Step-by-Step: How to Safely Update
Tax apps handle sensitive data. Updates patch vulnerabilities, protecting user data from theft or loss.
Prior-year tax files contain hyper-sensitive information like Social Security Numbers and banking details. Modern applications utilize updated multi-factor authentication (MFA) and data encryption protocols that older, unpatched offline apps do not support. 3. Cross-Platform Cloud Synchronization Tax apps handle sensitive data
| Common Issue | Platform(s) Affected | Possible Solution(s) | | :--- | :--- | :--- | | | General Tax Software | Locking your PC while an entry screen was open could cause the software to stop working. A fix was often provided in a patch. | | "No Update Found" Loop | Intuit ProSeries | The regular update function might not work. Users were instructed to use the "Refresh Updates" option from the Windows Programs menu under the ProSeries 2018 heading. | | Software Incompatibility | CCH TaxWise Desktop | Installing 2018 software on Windows 11 is not supported and may cause a "Blue Screen" error. Use the software only on a compatible OS. | | Login/Feature Confusion | China's ITS Withholding Client | The 2019 version of the client was for new filings, while the 2018 version was for past data queries and corrections. Use the "version switch" button in the top right corner to change modes. | | Outage During Updates | China's ITS System | Access was suspended during scheduled maintenance windows. Plan your filing around these announced dates (e.g., the Hainan Province update on Oct 30-31, 2018). |
Any that was not updated after mid-2018 would miss dozens of critical calculations. Thus, the upd component is not optional—it is mandatory for accuracy.
For most U.S. taxpayers, the window to e-file a 2018 tax return has closed. The IRS typically shuts down prior-year e-filing after a few years. You would likely need to file a paper return. For business software, some developers have noted that after a certain point, refunds for that year are forfeited and will not be paid.
For the 2017 tax year, the basic tax-free allowance increased to €8,820 for singles and €17,640 for married couples (a slight increase from €8,652 in 2016). This change affected the progressive tax rate calculation.