Payroll · HR · Tax Compliance
Resource hub
Guides, webinars, articles, and events — all in one place.
Guides & tools
New
The 2027 HR & Tax Compliance Calendar
Essential payroll deadlines, holidays, and monthly tips to keep your business compliant in 2027. Check it out
Webinar
Your year-end gameplan
Get ready for 2026 year-end filing: what's changing with thresholds, forms, and the move from FIRE to IRIS, plus what to do before December. October 20, 2026 WatchRegister
Webinar
New boxes, codes, and year-end form updates
A change-by-change look at every 2026 W-2 and 1099 update — new boxes, codes, and the $2,000 threshold — and how Greenshades handles each one. November 12, 2026 WatchRegister
Compliance Corner
All about TIN/SSN verification at year-end
TIN and SSN verification for tax year 2026: how IRS TIN Matching and SSA SSNVS work, what errors cost, and the steps to verify before you file W-2s and 1099s. Sep 2026 Read more
Compliance Corner
Form 941 and W-2 reconciliation: what has to match at year-end
Form 941 and W-2 reconciliation for 2026: which totals the IRS compares, what can differ, and what to fix before the February 1, 2027 deadline. Sep 2026 Read more
Blog
Do you need to e-file your 2026 year-end forms? (Spoiler: the odds are yes)
Employers with 10 or more information returns must e-file them. Here's who has to e-file for tax year 2026, where to file, and what's changing with FIRE. Sep 2026 Read more
Blog
Greenshades appoints Jason Sauvie as chief financial officer
Greenshades names Jason Sauvie as Chief Financial Officer, bringing two decades of finance leadership from RSA Conference, Medable, Intel, and Wind River. Sep 2026 Read more
Blog
Multi-state payroll in 2026: overcoming year-end challenges
Multi-state payroll for year-end 2026: how to allocate W-2 wages across states, handle 1099s, and prepare for new W-2 codes and the February 1, 2027 deadline. Sep 2026 Read more
Blog
How to Make the Most of National Payroll Week
National Payroll Week returns September 7–11, 2026, honoring payroll professionals nationwide. Here's how to recognize your team and mark the week. Aug 2026 Read more
Blog
What IRS Letter 226-J means for your ACA compliance records
IRS Letter 226-J proposes an ACA penalty using your own Forms 1094-C and 1095-C. Here is the documentation that changes how your response turns out. Aug 2026 Read more
Compliance Corner
What is the difference between Tax Forms 1099-NEC and 1099-MISC?
1099-NEC covers nonemployee pay for services; 1099-MISC covers rents, royalties, and prizes. See the 2026 $2,000 threshold, new boxes, and deadlines. Aug 2026 Read more
Blog
Product Update: Tax Engine Fixes, Pay Run Assistant Alerts & MA PFML Compliance Changes
Tax Engine jurisdiction updates (OR, PA, OH, AK, KY, GA), Pay Run Assistant new error visibility, Adjustment Run employee step changes, and MA PFML separate Family/Medical contribution tracking. Aug 2026 Read more
Compliance Corner
The 4 ERISA guardrails on Trump Account contributions — what HR needs to know
DOL's June 2026 guidance sets four conditions for employer Trump account contributions to avoid ERISA plan status. Here's what HR directors need to know. Aug 2026 Read more
Compliance Corner
The IRS gave Trump account employer contributions a W-2 code. Here's what that means for payroll.
The IRS finalized a W-2 reporting code for Trump Account employer contributions. Here's what payroll teams need to know about Box 12, Code TA, before year-end. Aug 2026 Read more
Compliance Corner
Massachusetts PFML Contribution Rate Changes for 2027
Starting January 1, 2027, Massachusetts shifts the employer PFML contribution from medical leave to family leave. Here's what changes. Aug 2026 Read more
Compliance Corner