Pro Rata Calculator
Estimate charges when switching plans mid-cycle
Your billing anniversary day is shown in your Starlink account under Billing. The day number (e.g. the 22nd) is what you need for the slider above.
Upgrades: Charged immediately. You pay the daily rate difference for remaining days. Starlink uses a fixed 30-day divisor regardless of actual month length.
Downgrades (paid plans): $0 due today. Credit applied to your account. Choose to change now or at next cycle.
Downgrade to Standby: Takes effect at next billing date only — no immediate change option.
💡 Tip: To minimise upgrade costs, wait until you've used your current data allowance, or schedule the change close to your billing date.
Australian plan prices as at March 2026. Prices may change — check the Starlink app.
Free tool by Dishy Mini Mounts — Australia's Starlink Mini Accessories