All tools
5-year cycle calculator
From last TD-284 acceptance: notice window, eligibility, extended maintenance, residual clocks.
Where you are
Advance Notification window
Advance notice from
Nov 18, 2025
~12 months before eligibility
Typical eligibility
Nov 18, 2026
Acceptance + 5 years
Year 7 window ends
Nov 18, 2028
Extended maint typically ends
Advance Notification window
Submit Advanced Notification (about one year or less before need). Start demos. Do not sign a vendor to proceed.
1
Years 0–4
Maintain
2
Year 4–5
Advanced Notification
3
Year 5
Refresh eligible
4
Years 6–7
Extended maint
5
Year 8+
Local unless exception