Mark Your Calendar: 2025-2026 Testing Windows and Application Deadlines
| Testing Window |
Application Deadline |
| July 7 - 18, 2025 |
May 31, 2025 |
| November 3 - 17, 2025 |
October 10, 2025 |
| February 16 - March 6, 2026 (In-person at NDA Annual Convention & Expo) |
January 9, 2026 |
| May 4 - 20, 2026 |
April 3, 2026 |
CDS Exam Fees
| Initial Exam Fee (1st Time Application Only) |
$595 USD (NDA Members) | $755 USD (Non-Members) |
| Retake Exam Fee |
$445 USD |
CDT Exam Fees
*Special Pricing Until June 13, 2025: $240 for NDA Members and Non-Members
| Initial Exam Fee (1st Time Application Only) |
$300 USD (NDA Members) | $450 USD (Non-Members) |
| Retake Exam Fee |
$225 USD |
*All exam application fees are non-refundable.