# Plans & Billing

**Q: How is usage measured?**\
A: Each decoded user action returned by the API counts as one Compute Unit (CU).\
\
**Q: Is there a free tier?**\
A: Yes, we offer a limited free quota so you can test the API before committing to a paid plan.

**Q: Where can I find pricing details?**\
A: Pricing plans are listed on our homepage. Please check the [Pricing page](https://txdecoder.xyz/#pricing) for details.

**Q: How do I pay?**\
A: We only accept crypto payments. Please contact us directly via Telegram for details.<br>

**Q: What happens if I exceed my CU quota?**\
A: You can top up to get more CUs. The top-up amount must be a multiple of $100.

**Q: How about the billing cycle?**\
A: The billing cycle always starts on the first day of the month and ends on the last day of the month for all packages.

**Q: Can I upgrade my plan ?**\
A: Yes, anytime. Just contact us via Telegram

**Q: If I don't use all CU quota this month, can I carry it over to the next month?**\
A: No, all CU quotas will be reset at the beginning of the next billing cycle.

**Q: When should I pay for the next billing ?**\
A: The payment deadline is 14:00 UTC on the first day of each month. If the payment is not made by then, your account will be suspended.


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