Keep each contribution and drawdown lightweight but consistent. These are the fields that let the folder act as a running reserve ledger you can actually read at a glance. Use the same fields on every entry so the running balance always reconciles to the sum of the rows.
- Date
- The day you moved money into or out of the buffer, for example 2026-03-15. Dating every entry is what lets you see which months you fed the reserve and which months you leaned on it.
- Direction
- Contribution (in) or drawdown (out). A simple plus or minus in front of the amount keeps the ledger readable, for example +500 or -300.
- Amount
- The exact figure moved, in your working currency. This is the number that feeds your running balance.
- Source or reason
- Where a contribution came from (for example, 10 percent of the Acme project invoice) or why you drew it down (slow week, covered May rent shortfall).
- Running balance
- The reserve size after this entry, so the current cushion is visible without re-adding the whole list. Update it on the latest record or in a dedicated balance record.
- Attached proof
- The transfer confirmation, deposit slip, or screenshot attached to the record so the entry is backed by evidence, not memory.
- Note
- Optional context: what this top-up is earmarked for, a smoothing intention for lumpy income, or a flag that this draw needs replacing next fat month.