The gravityflow_step_due_date_timestamp filter allows the due_date timestamp to be overridden.


Parameter Type Definition
$due_date_timestamp integer The current scheduled due date (UTC).
$expiration_type string The type of expiration defined in step settings.
$step Gravity_Flow_Step The current step.


Example 1 - Adjust due date based on a field value

This example increases the due date by a day for a specific form with a specific value on one of the entries.

add_filter( 'gravityflow_step_due_date_timestamp', 'extend_expiration_date', 10, 3 );
function extend_expiration_date( $due_date_timestamp, $expiration_type, $step ) {
    //Ensure you are only adjusting the desired form/step
    if ( $step->get_id() !== 76 ) {
        return $due_date_timestamp;
    $entry = $step->get_entry();
    if ( $entry && isset( $entry['2'] ) && $entry['2'] == 'Extended' ) {
        $due_date_timestamp = strtotime('+1 day', $due_date_timestamp );
    return $due_date_timestamp;


This code should be placed in the functions.php file of your active theme or in a custom functions plugin.