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PostHog Bill Too High

Workaround available All Updated October 21, 2026

Quick answer

A high PostHog bill almost always comes from one or two meters: autocapture events, 100% replay sampling, feature flag requests in SPAs, or add-ons like identified events. Use the billable usage dashboard to find the source, then sample, trim and set billing limits.

Most likely fix: Find what's driving cost.

Symptoms

Invoice far above expectations; usage emails at 80% or 100% of free allowance; one product line dominates the bill.

Why it happens

  • Autocapture generating many low-value events
  • Session replay recording every session
  • Feature flags evaluated on every route change, or local evaluation polling on old SDKs (charged 10 requests per poll)
  • Identified events, group analytics or data pipelines add-ons enabled
  • Warehouse syncs, destinations or batch exports moving many rows
  • Traffic spike or bot traffic

How to fix it

Try these in order — the most common fix is first.

  1. 1. Find what's driving cost

    1. Create a dashboard from the billable usage template
    2. Break down usage by event, SDK library and product
    3. Check Organization > Billing for each product's usage and add-ons

  2. 2. Cut events and recordings

    1. Restrict autocapture or switch noisy flows to custom capture
    2. In Session replay settings, lower the sample rate, raise the minimum duration or record only on triggers

  3. 3. Reduce feature flag requests

    1. Avoid repeated reloadFeatureFlags() calls
    2. Update server SDKs to versions with ETag support so unchanged polls count as 1 request instead of 10
    3. Increase the local evaluation poll interval (default 30 seconds)

  4. 4. Set billing limits per product

    1. Open Organization settings > Billing
    2. Scroll to the product, click 'Set billing limit', enter a dollar amount and save
    3. Remember data above the limit is dropped permanently

  5. 5. Ask about a refund for a spike

    1. For hobby or pre-revenue projects with a surprise first bill or a large spike, contact support via the in-app Help button and ask about PostHog's side project insurance

This guide also covers

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  • why is posthog so expensive

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