I'm running on Google Cloud. I was looking at the costs and I noticed something weird - every week the daily cost of running machines is going down, and then on the 1st day of the month, it goes back up.

It's "jumping" between $1/day up to $2.5/day, so it's very significant.

This is a screenshot of the cost breakdown of running one machine with 2 vCPUs, 7.5 GB RAM in europe-west.

enter image description here

Why is it going up and down? Is there any way to keep it at $1/day?

1 Answer 1


The prices don't change, but an increasing discount is applied when your instances run longer.

Google Compute offers a sustained use discount for running specific Compute Engine resources a significant portion of the billing month. The discounts come in a couple of tiers and start to apply after running first 25% of a month, then increase after running 50% and 75% of the month. See https://cloud.google.com/compute/docs/sustained-use-discounts

graph illustrated

An alternative to the automatically applied sustained use discount is the committed use discount, where signing up for one or three years is awarded with a discount: https://cloud.google.com/compute/docs/instances/signing-up-committed-use-discounts

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.