# Stupid maths question for beginner in field.

Explorer ,
Apr 10, 2021 Apr 10, 2021

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Hi all

I am creating an invoice and one of the fields is the form is tax (to be added). How do I add that in the calculate area, if I have a subtotal field and want to add 24% to that total?

Thanks in advance

Rob

practice safe design | use a concept ~ Petrula Vrontikis
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## 1 Correct Answer

Explorer , Apr 10, 2021 Apr 10, 2021
OK, I sorted it.(subtotal*1.24)-subtotal Thanks for your help!!

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Adobe Community Professional ,
Apr 10, 2021 Apr 10, 2021

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Multiply the subtotal by 1.24 ...

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Explorer ,
Apr 10, 2021 Apr 10, 2021

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Thanks for that. Can I now ask, where would I put this calculation and in what format to select teh field and then do the multiplication.

Thanks in advance

Rob

practice safe design | use a concept ~ Petrula Vrontikis

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Adobe Community Professional ,
Apr 10, 2021 Apr 10, 2021

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That depends. Do you want to edit the value of the subtotal field itself, or do you want to show the value of the subtotal+tax in another field?

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Explorer ,
Apr 10, 2021 Apr 10, 2021

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The Subtotal firld is a sum of all the values in the form above, it doesn't get edited.

The tax field also is not editable just a value of subtotal*1.24

Thanks

Rob

practice safe design | use a concept ~ Petrula Vrontikis

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Adobe Community Professional ,
Apr 10, 2021 Apr 10, 2021

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Enter that formula under the Simple Field Notation option of the Calculate tab of the tax field, then.

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Explorer ,
Apr 10, 2021 Apr 10, 2021

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I found this as an example expression, but it doesn't seem to produce the right result.

{{tax_added:calc(subtotal * 1.24):format(number, “€,.00") }}

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Explorer ,
Apr 10, 2021 Apr 10, 2021

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OK, I found the problem. I did this and it kind of works, but the Total is wrong. The total is simply Subtotal+Tax.

Rob

practice safe design | use a concept ~ Petrula Vrontikis

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Explorer ,
Apr 10, 2021 Apr 10, 2021

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OK, I sorted it.

(subtotal*1.24)-subtotal

Thanks for your help!!

practice safe design | use a concept ~ Petrula Vrontikis

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Adobe Community Professional ,
Apr 10, 2021 Apr 10, 2021

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Ah, you want just the tax... In that case you can simply multiply by 0.24 .

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