You need two tables with a relationship that links JobTable::JobID = PaymentTable::JobID. JobID should be an auto-entered serial number and the relationship should be set up with the option "Allow creation of records via this relationship" selected.
The fields in orange should only be found in the JobTable. In layouts where you display payment records, you can add these fields from the JobTable and they will correctly show the matching data for the current payment record.
You'll probably want to use a portal. Make layout based on teh JobTable and create the portal specifying the payment table. Now for a given Job, you'll be able to see/edit all the related payment records.
Don't duplicate info, that's what a relational database is for.
Job - Client; Job Description; Job No.; Estimate No. etc.
Payment - Payee; Job No. etc.
Thanks Phil and Mikey! Sounds good... should work!