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Posts: 25

Calculate Payment due date based on payment day

Hi All,

I have the following dataset

``````data have;

input account_id reporting_date payment_day;
informat reporting_date  date9.;
format reporting_date  date9.;
cards;
1000 31JAN2017 31
1000 28FEB2017 31
1000 31MAR2017 31
1000 30APR2017 31
1000 31MAY2017 31
2000 31JAN2017 30
2000 28FEB2017 30
2000 31MAR2017 30
2000 30APR2017 30
;
run``````

I need to calculate the day a payment will be due each month based on reporting date and payment day. I can simply merge the payment day to reporting date but for instance there are not 31 days in Feb and for any month without 31 days I will be returned with missing values.

How can I get the dataset below using the data above

 account_id reporting_date payment_day payment_due_date 1000 31-Jan-17 31 31-Jan-17 1000 28-Feb-17 31 28-Feb-17 1000 31-Mar-17 31 31-Mar-17 1000 30-Apr-17 31 30-Apr-17 1000 31-May-17 31 31-May-17 2000 31-Jan-17 30 30-Jan-17 2000 28-Feb-17 30 28-Feb-17 2000 31-Mar-17 30 30-Mar-17 2000 30-Apr-17 30 30-Apr-17

Accepted Solutions
Solution
‎10-26-2017 08:30 AM
Posts: 1,312

Re: Calculate Payment due date based on payment day

You want payment day on day PD of the month.  If the month is too short  to have day PD, then use end-of-month:

``````data have;
input account_id reporting_date payment_day;
informat reporting_date  date9.;
payment_date=  min(intnx('month',reporting_date,-1,'end')+payment_day
,intnx('month',reporting_date,0,'end'));

format reporting_date payment_date date9.;
cards;
1000 31JAN2017 31
1000 28FEB2017 31
1000 31MAR2017 31
1000 30APR2017 31
1000 31MAY2017 31
2000 31JAN2017 30
2000 28FEB2017 30
2000 31MAR2017 30
2000 30APR2017 30
;
run;``````

All Replies
Solution
‎10-26-2017 08:30 AM
Posts: 1,312

Re: Calculate Payment due date based on payment day

You want payment day on day PD of the month.  If the month is too short  to have day PD, then use end-of-month:

``````data have;
input account_id reporting_date payment_day;
informat reporting_date  date9.;
payment_date=  min(intnx('month',reporting_date,-1,'end')+payment_day
,intnx('month',reporting_date,0,'end'));

format reporting_date payment_date date9.;
cards;
1000 31JAN2017 31
1000 28FEB2017 31
1000 31MAR2017 31
1000 30APR2017 31
1000 31MAY2017 31
2000 31JAN2017 30
2000 28FEB2017 30
2000 31MAR2017 30
2000 30APR2017 30
;
run;``````
☑ This topic is solved.