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Clara's
vesting modelling
calculator

A calculator to help you visualise different vesting schedules.
Vesting terms
Enter in the details of your vesting terms.
Total number of options
Enter in the total number of options that your team member is receiving.
Need help figuring out how many options you should give your team?
Try out Clara's free ESOP Modelling Calculator.
Vesting start date
Enter in the date when the vesting caluclations will start. Unless there is a cliff, the first vesting period will either be 1, 3, or 12 months from this date depending on the vesting frequency you choose. If there is a cliff, the first vesting period will depend on how many months the cliff is.
Vesting duration (months)
Enter in the number of months the vesting schedule will run from the vesting start date. This is independent of any cliff period (see below).
Vesting frequency
Select the frequency of the vesting periods from the list below. This determines how many months will be between vesting periods.
Cliff Duration (months)
Enter in the number of months between the vesting start date and the first actual vesting period. Any number of options that would have vested before the cliff period will be added to the first actual vesting period. If there is no cliff period, enter '0' or leave this field blank.
Allocation type
This determines how rounded shares are distributed during the term of the schedule. Each option in the list shows how a total of 18 options would be split amongst 4 vesting periods based on the allocation type.
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Vesting schedule
Vesting Period
Date
Number of options vesting
Cumulative number of options vested
1
21 Nov 2025
250
250
2
21 Dec 2025
21
271
3
21 Jan 2026
21
292
4
21 Feb 2026
21
313
5
21 Mar 2026
21
334
6
21 Apr 2026
21
355
7
21 May 2026
20
375
8
21 Jun 2026
21
396
9
21 Jul 2026
21
417
10
21 Aug 2026
21
438
11
21 Sep 2026
21
459
12
21 Oct 2026
21
480
13
21 Nov 2026
20
500
14
21 Dec 2026
21
521
15
21 Jan 2027
21
542
16
21 Feb 2027
21
563
17
21 Mar 2027
21
584
18
21 Apr 2027
21
605
19
21 May 2027
20
625
20
21 Jun 2027
21
646
21
21 Jul 2027
21
667
22
21 Aug 2027
21
688
23
21 Sep 2027
21
709
24
21 Oct 2027
21
730
25
21 Nov 2027
20
750
26
21 Dec 2027
21
771
27
21 Jan 2028
21
792
28
21 Feb 2028
21
813
29
21 Mar 2028
21
834
30
21 Apr 2028
21
855
31
21 May 2028
20
875
32
21 Jun 2028
21
896
33
21 Jul 2028
21
917
34
21 Aug 2028
21
938
35
21 Sep 2028
21
959
36
21 Oct 2028
21
980
37
21 Nov 2028
20
1,000