Jadpo is experimental and not ready for production. These docs follow the compiler's main branch as of 5 Nov 2026. What's built · Install 0.3.0
jadpo
ReferenceMoney and banking

LanguageValues and typesStandard typesMoney and banking

TaxRate

On this page

A rate of tax, as a percentage that can't be below zero: 20%.

Use it for VAT or sales tax. For any other percentage, use Percentage. For a discount, use Discount.

Shape

One Percentage, never below 0.

Example

example
TaxRate(20%)

A value outside its limits breaks min or max.

text.parse(raw, as: TaxRate) reads one from text that comes from outside. Text that isn't one at all fails malformed, such as 20, 0.2 or twenty percent.

Good to know

  • == tells you whether two are the same, and < and list.sort_by compare and sort them.

In JSON

A string, in a request, a response or json.write:

json
"0%""5%""20%"

Details

Text form, storage, how it is shown, and operations

TaxRate is in the group Money and banking, and has been in Jadpo since 0.1.0.

Text form

text.from writes one standard text form, the same form text.parse reads back: 0%, 5% and 20%.

How it is stored

It is stored in one column named for the field, of type numeric. 5% is stored as 0.05.

How it is shown to people

text.format(value, locale:) shows it to people in their locale.

With locale: Locale.en_gb:

Value Shown
0% 0%
5% 5%
20% 20%

Operations

It also takes text.parse, text.from, text.format, json.read, json.write and ==. How every standard type behaves says how they work.

Markdown for agents: /docs/types/type-tax-rate.md.Built from Jadpo main at aee2e8f.