Vertex AI Standard PayGo tier not recognized — Billing shows US$0 despite active Gemini usage

Hi,

I’m trying to qualify for Standard PayGo Tier 1, which requires $10+ in spending over 30 days. However, my billing is showing US$0 total cost even though I have significant Gemini API usage.

Here’s my situation:

  • Billing account type: Self-serve (직접), NOT free trial
  • Organization: comet-talk.ai
  • Project: (PII Removed by Staff)
  • Period: March 1–19, 2026

Cost analysis page shows ₩91,845 (~US$63) in total usage cost for this month.

However:

  • Billing overview shows total cost as US$0
  • Cost table (거래 내역) only shows February, nothing for March yet
  • Vertex AI dashboard does NOT display any Standard PayGo tier info

Regarding credits:

  • I have one credit: “Trial credit for GenAI App Builder” (₩1,427,870)
  • This credit is 100% remaining (completely unused), so it should NOT be offsetting my Gemini API costs
  • The credit scope says it applies to specific services only

My questions:

  1. Why does billing overview show US$0 when cost analysis clearly shows ₩91,845 in usage?
  2. What is preventing my Gemini API spend from counting toward Standard PayGo tier qualification?
  3. Is there a delay in billing recognition, or is something else offsetting my costs?

Any help would be appreciated. Thank you!