The cut-off marks for the NABARD Grade B Exam after the result declaration can be checked by following the steps below:

1. Visit the official website:
- Go to the official website of NABARD (National Bank for Agriculture and Rural Development).

2. Look for the 'Career' section:
- On the homepage, search for the 'Career' or 'Recruitment' section. It is usually located at the top or bottom of the website.

3. Find the Grade B Exam section:
- In the 'Career' or 'Recruitment' section, look for the notification related to the Grade B Exam. It may be titled as "Recruitment of Officers in Grade B" or similar.

4. Click on the notification:
- Click on the notification to open it and find the details about the cut-off marks.

5. Check for cut-off marks:
- Look for the section that provides information about the cut-off marks. It may be mentioned as "Cut-off Marks" or "Minimum Qualifying Marks" in the notification.

6. Category-wise cut-off:
- The cut-off marks are usually provided separately for different categories such as General, OBC, SC, ST, etc. Look for the respective category and note down the cut-off marks.

7. Additional information:
- The notification may also provide additional details such as sectional cut-offs or overall cut-offs. Make sure to read and understand all the information provided.

8. Save or take a screenshot:
- Save the cut-off marks or take a screenshot for future reference. This will help you compare your scores with the cut-off marks and assess your chances of qualifying for the next stage of the exam.

9. Keep checking for updates:
- It is important to regularly check the official website for any updates or changes in the cut-off marks. The official website is the most reliable source of information regarding the NABARD Grade B Exam.

By following these steps, you can easily check the cut-off marks for the NABARD Grade B Exam after the result declaration. It is advisable to visit the official website directly to ensure the accuracy of the information and avoid relying on any other website.