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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
01 May 2026
250
250
2
01 Jun 2026
21
271
3
01 Jul 2026
21
292
4
01 Aug 2026
21
313
5
01 Sep 2026
21
334
6
01 Oct 2026
21
355
7
01 Nov 2026
20
375
8
01 Dec 2026
21
396
9
01 Jan 2027
21
417
10
01 Feb 2027
21
438
11
01 Mar 2027
21
459
12
01 Apr 2027
21
480
13
01 May 2027
20
500
14
01 Jun 2027
21
521
15
01 Jul 2027
21
542
16
01 Aug 2027
21
563
17
01 Sep 2027
21
584
18
01 Oct 2027
21
605
19
01 Nov 2027
20
625
20
01 Dec 2027
21
646
21
01 Jan 2028
21
667
22
01 Feb 2028
21
688
23
01 Mar 2028
21
709
24
01 Apr 2028
21
730
25
01 May 2028
20
750
26
01 Jun 2028
21
771
27
01 Jul 2028
21
792
28
01 Aug 2028
21
813
29
01 Sep 2028
21
834
30
01 Oct 2028
21
855
31
01 Nov 2028
20
875
32
01 Dec 2028
21
896
33
01 Jan 2029
21
917
34
01 Feb 2029
21
938
35
01 Mar 2029
21
959
36
01 Apr 2029
21
980
37
01 May 2029
20
1,000