Frequently Asked Questions

All deposits entered into Core between 8:00 a.m.-10:00 a.m. will post the same day. Deposits entered between 10:00 a.m.-5:00 p.m. will post the next working day.

The cashier window is open from 10:00 a.m.-4:00 p.m. for check cashing and from 8:00 a.m.-5:00 p.m. for agencies to pick up interagency mail, payroll and CMIA.

All requests must be received by the treasurer's office no later than 4:30 p.m.

Yes, a $25 stop payment fee per request is charged to the agency.

You can request an image through Image View via https://www.youroklahoma.com/imaging/ost/index.php.

The agency will have to issue a stop payment/reversal form. For payroll items, use the OSF Form PWC. Fill it out and fax it to OSF, 405-521-3902 and mail the original form to OSF. For all other items, fax the Stop Payment/Reversal form to OST, 405-521-4176. If you need a reversal form, contact 405-521-6070. If OST receives the stop payment/reversal form from the agency three days prior to the effective date, the item can be stopped before going to the receiver's account. If OST does not receive the stop payment/reversal form at least three days prior to the effective date, a reversal will be issued on the item. Reversals are alwasy at risk of NOT being returned. The agency must notify the receiver of the reversing entry and the reason for that entry no later than the effective date of the reversing entry.

A reversing entry must be transmitted to the receiving bank by midnight of the fifth banking day following settlement of the erroneous entry. In other words, there is a limited timeframe to originate reversals.