> ## Documentation Index
> Fetch the complete documentation index at: https://docs.lead.bank/llms.txt
> Use this file to discover all available pages before exploring further.

# Overview

> Overview of balance and transaction files.

<Warning>
  **Upcoming Changes**

  We're introducing additional validation to ensure every Balance references a valid parent Account. Partners submitting Balance files should review their account creation and file generation workflows before validation is enforced on October 6, 2026.

  👉 [View Details](/upcoming-changes#account-validation-during-new-balance-creation)
</Warning>

## Overview

Balances and Transactions files provide updates on Lead-owned balances and related transactions.

Balance types:

* **Credit balances:** term loans or lines of credit
* **Deposit balances:** debit cards, deposit accounts, FBO accounts

<Check>
  You are responsible for providing end-of-day balances and the corresponding transactions that impact these balances. This information is used for reconciliation, accounting entries, and program oversight.

  **Expectation**

  `balance on T` equals `balance on T-1` plus transactions affecting the balance from T.
</Check>

## Reconciliation Details

`Balances` represent underlying customers' ledger and `Transactions` represent transactions affecting the balance.

* For `deposit` programs, reconciliation may include `rewards_amount`, `dispute_balance`, `charge_off_balance` and `interest_accrued_balance` in addition to `balance`.
* For `credit` programs, reconciliation may include `rewards_amount`, `dispute_balance`, `charge_off_balance`, and `past_due_balance`, in addition to `balance` and its components (`principal`, `fees`, and `interest`).

## Transactions Updates and Non-Posted Transactions

### **Relevant for Balance Type = Deposit Only**

* **Non Posted Transactions**= This file lists transactions where funds have been posted to the Customer FBO account but not yet to customer accounts. In this case, `balances` will not have been affected. Lead will do FBO account reconciliation based on the following:
  * FBO account balance = sum of `amount` from `Non Posted Transactions`+ sum of `balance` from `Balances`
* **Transactions Updates** = This file captures transactions where the actual settlement date differs from the one in `Transactions` file. Example may be where a transaction was expected to be posted on January 1st, 2025 per `Transactions` and ended up posting on January 2nd, 2025. In this case, clients will use `Transactions Updates` to update `settlement_date` for the `transaction_id`.

## Implementation

During [implementation](/onboarding/implementation), Lead will collaborate with you to determine whether your program includes any of the following features, which will be captured through data files.

* Interest (deposit products only)
* Overdraft features (deposit products only)
* Withholdings (deposit products only)
* Rewards
* Non-USD balances
* Customer balances held across multiple bank accounts