The internal balance is kept in rubles and is spent on any purchase in SerpMode, including auto-renewal, before the card is charged.

How the balance is topped up
- With the remainder of the unused period when you switch to a more expensive plan. It immediately goes toward the payment for the new plan (see Changing your plan).
- With SerpMode credits: bonuses and compensations.
If a payment cannot be processed on the terms calculated at checkout, it is not credited to the balance. It is refunded by the same method you paid with (see «Payment statuses»).
When you switch to a cheaper plan, the balance does not change.
What it is spent on
On any purchase in the service, including auto-renewal, first. Only the missing amount is charged to the card. If the balance covers the whole purchase, the payment is made entirely from the balance.
Balance history
In the «Balance history» block on the «Account → Payments and subscription» page you see the 20 latest movements. While the balance has not moved, it says «No balance activity yet».

What to know
- While the agreement is in force, the balance cannot be withdrawn. When you withdraw from the agreement, the remainder is refunded in full, except SerpMode bonuses and compensations: they are not refunded in money (see «Refunds and canceling your subscription»).
- The balance is counted as a discount on further purchases and is not money, including electronic money.
- Paying from the balance works as a discount: the receipt includes only the amount paid through YooKassa (Receipts and payment documents).