Effective Dates: 01/08/1999 - Present Previous | Next

TN 7 (07-92)

SI 02005.095 Proration Chart

A. When to use

Use the proration chart on the next page which shows the proration fraction for each month of the year (including leap years when February has 29 days) for each effective filing date in the month.

B. Procedure

To use the proration chart, first find the effective day of filing in the left hand column. Then, select the correct month of filing column to the right of the effective filing day column. (The fraction shown in the month column gives the number of benefits days and the number of days in the month.)

C. Example

If the day of effective filing is October 23rd, the correct fraction is 9/ 31. That is, including October 23rd, there are 9 benefit days in October and 31 calendar days in October. To find the prorated benefit, multiply the unprorated benefit by the number of benefit days (the first number in the fraction)(9 for October 23rd) and divide the result by the number of days in the month (the second number in the fraction)(31 for October).

D. References

E. Exhibit of proration chart

 

Effective Filing date January, March, May, July August, October, December April, June, September,

November 		February February (in leap year)
  Benefit

Days/Days in Month 		Benefit Days/Days in Month Benefit

Days/Days in Month 		Benefit

Days/Days in Month
1 No Proration No Proration No Proration No Proration
2 30/31 29/30 27/28 28/29
3 29/31 28/30 26/28 27/29
4 28/31 27/30 25/28 26/29
5 27/31 26/30 24/28 25/29
6 26/31 25/30 23/28 24/29
7 25/31 24/30 22/28 23/29
8 24/31 23/30 21/28 22/29
9 23/31 22/30 20/28 21/29
10 22/31 21/30 19/28 20/29
11 21/31 20/30 18/28 19/29
12 20/31 19/30 17/28 18/29
13 19/31 18/30 16/28 17/29
14 18/31 17/30 15/28 16/29
15 17/31 16/30 14/28 15/29
16 16/31 15/30 13/28 14/29
17 15/31 14/30 12/28 13/29
18 14/31 13/30 11/28 12/29
19 13/31 12/30 10/28 11/29
20 12/31 11/30 9/28 10/29
21 11/31 10/30 8/28 9/29
22 10/31 9/30 7/28 8/29
23 9/31 8/30 6/28 7/29
24 8/31 7/30 5/28 6/29
25 7/31 6/30 4/28 5/29
26 6/31 5/30 3/28 4/29
27 5/31 4/30 2/28 3/29
28 4/31 3/30 1/28 2/29
29 3/31 2/30 ​ 1/29
30 2/31 1/30
31 1/31
To Link to this section - Use this URL:
http://policy.ssa.gov/poms.nsf/lnx/0502005095
SI 02005.095 - Proration Chart - 01/08/1999
Batch run: 11/14/2014
Rev:01/08/1999