# Calculate on Field Update

**URL:** <https://community.miniextensions.com/t/calculate-on-field-update/912>\
**Category:** Feature Requests\
**Created:** [November 7, 2024, 10:14pm UTC](https://community.miniextensions.com/t/calculate-on-field-update/912 "2024-11-07T22:14:42Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![darryl.oliver](https://yyz1.discourse-cdn.com/flex035/user_avatar/community.miniextensions.com/darryl.oliver/32/207_2.png) [@darryl.oliver](https://community.miniextensions.com/u/darryl.oliver)\
**Post date:** [November 7, 2024, 10:14pm UTC](https://community.miniextensions.com/t/calculate-on-field-update/912/1 "2024-11-07T22:14:42Z")

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I’m guessing Save & Continue exists because what I’m requesting is not possible, but I would like to keep the form to one page and calculate/recalculate a formula field when an input for the formula is updated.

Stripe allows non-profits to ask donors to cover the fees and my specific use case is a form that calculates the processing fee when an amount is entered or edited.

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**Author:** ![Hannes](https://yyz1.discourse-cdn.com/flex035/user_avatar/community.miniextensions.com/hannes/32/660_2.png) [@Hannes](https://community.miniextensions.com/u/Hannes)\
**Post date:** [November 8, 2024, 12:30am UTC](https://community.miniextensions.com/t/calculate-on-field-update/912/2 "2024-11-08T00:30:53Z")

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Hey Darryl,

Yeah, that is one of the main use cases for Save & Continue, I’m afraid. Formula fields are calculated by Airtable, and data is only sent to Airtable when a form is saved or submitted. You could try using the “Auto” mode for Save & Continue, which would save changes automatically, but there’s still some delay, particularly if many changes are made in quick succession.

Is there any particular reason why you don’t like the multi-page feature? Perhaps there’s something we can do to improve that for you?