# Help Regarding BETA value

**URL:** <https://forum.dynare.org/t/help-regarding-beta-value/20842>\
**Category:** Perfect foresight simulations\
**Created:** [4 August 2022 11:57 UTC](https://forum.dynare.org/t/help-regarding-beta-value/20842 "2022-08-04T11:57:31Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![jpfeifer](https://forum.dynare.org/user_avatar/forum.dynare.org/jpfeifer/32/5044_2.png) [@jpfeifer](https://forum.dynare.org/u/jpfeifer)\
**Post date:** [10 August 2022 07:45 UTC](https://forum.dynare.org/t/help-regarding-beta-value/20842/8 "2022-08-10T07:45:11Z")

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We usually use unitless percentage deviations from steady state, with the steady state units being meaningless. See e.g.

> [@Compare VAR IRF of original series and percentage change of series](https://forum.dynare.org/t/compare-var-irf-of-original-series-and-percentage-change-of-series/12787/2):
>
> What exactly is your question? Im most DSGE models the levels of the variables can be scaled arbitrarily, rendering the levels meaningless. Percentage deviations are invariant to such scaling. Think about measuring output in euro or dollars. The levels would differ according to currencies, but the IRFs in percentage deviations would be the same.

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