Official Payroll Tax Source Registry
Official Payroll Tax Sources
Daily source checking for New York State, New York City, Yonkers, and IRS payroll withholding publications. Source changes are flagged for review before payroll tax tables are activated.
Total Sources
6
Active
6
Update Available
0
NYS Sources
4
IRS Sources
2
Source Check Controls
This checks official source content and flags changes. It does not auto-change payroll calculations.
Official Source Registry
| Source | Jurisdiction | Publication | Last Check | Hash / Size | Status | Actions |
|---|---|---|---|---|---|---|
|
IRS Publication 15 Employer Tax Guide Internal Revenue Service irs_pub_15 |
Federal US employer tax guide |
Publication 15 Open Official Source |
05/28/2026 8:59 AM Changed: — |
b46c3622439d8521...1,713,916 bytes |
active No update flag |
|
|
IRS Publication 15-T Federal Income Tax Withholding Methods Internal Revenue Service irs_pub_15t |
Federal US federal income |
Publication 15-T Open Official Source |
05/28/2026 8:59 AM Changed: — |
31b3e2428628e8d2...2,480,887 bytes |
active No update flag |
|
|
New York City Resident Withholding Tax Tables and Methods New York State Department of Taxation and Finance nys_nys50_t_nyc |
Local NYC local income |
NYS-50-T-NYC Open Official Source |
05/28/2026 8:59 AM Changed: — |
c380ffaf22633245...510,603 bytes |
active No update flag |
|
|
New York State Withholding Tax Tables and Methods New York State Department of Taxation and Finance nys_nys50_t_nys |
State NY state income |
NYS-50-T-NYS Open Official Source |
05/28/2026 9:05 AM Changed: — |
e1c2b3440572a100...384,460 bytes |
active No update flag |
|
|
Yonkers Withholding Tax Tables and Methods New York State Department of Taxation and Finance nys_nys50_t_yonkers |
Local YONKERS local income |
NYS-50-T-Y Open Official Source |
05/28/2026 9:29 AM Changed: — |
2fb609e46fbd1a7c...400,873 bytes |
active No update flag |
|
|
New York Withholding Tax Rate Changes New York State Department of Taxation and Finance nys_withholding_rate_changes |
State NY withholding notice |
NYS Withholding Rate Changes html Open Official Source |
05/28/2026 8:59 AM Changed: — |
d0ff70fd8711fc8a...22,915 bytes |
active No update flag |