A fill slip and a credit slip may look similar, but they tell opposite stories. A fill adds casino chips to a table bank. A credit removes chips from that table and returns them to the cage or chip bank.
The distinction is not based on whether the table is winning or losing. It is based on the direction of an internal inventory transfer.
| Document | Chip movement | Effect on the table bank |
|---|---|---|
| Fill slip | Cage to table | Increases inventory |
| Credit slip | Table to cage | Decreases inventory |
That single directional difference explains why the two transactions enter table-win accounting on opposite sides.
Why a table needs either document
A live table does not own an unlimited supply of every denomination. During play, its rack can become short of useful chips or overloaded with chips it does not need.
A fill may be requested when:
- repeated player wins have depleted a denomination;
- several large buy-ins require more working chips;
- the table is opening with an approved starting bank;
- a denomination exchange has left the rack unbalanced.
A credit may be requested when:
- the rack holds excess high-denomination chips;
- the table is closing or reducing inventory;
- the tray is too crowded for safe dealing and counting;
- chips need to be returned before a shift or table-bank change.
The fill-slip definition and credit-slip definition describe the documents separately. This comparison page focuses on the control logic that prevents one from being mistaken for the other.
The transaction is more than a piece of paper
The slip is evidence of a controlled transfer. Exact procedures differ by jurisdiction and by whether the property uses paper or computerized forms, but a sound process normally includes several distinct functions:
- A table-games supervisor identifies the need and authorizes the amount and denominations.
- The cage or chip bank prepares the chips and the corresponding record.
- An authorized employee transports the chips and documentation.
- The dealer or boxperson and a supervisor count or verify the transfer at the table.
- Required copies or electronic records are routed to the table, cage, accounting system, or locked document box.
This division of work matters. The person requesting chips should not be able to create an unrecorded addition, and the person removing chips should not be able to make them disappear from both table and cage accountability.
Nevada's current table-games minimum internal control standards require fill and credit transactions to be authorized and documented, address signatory controls, and require reconciliation of the records. The Nevada table-games MICS also allow manual or computerized systems, provided the control objectives are met.
A worked table-win reconciliation
Consider a blackjack table with these shift figures:
| Item | Amount |
|---|---|
| Opening table inventory | $20,000 |
| Fills received | $8,000 |
| Credits sent out | $3,000 |
| Drop recorded | $14,000 |
| Closing table inventory | $25,500 |
A simplified table-win formula is:
Table win = closing inventory + credits + drop - opening inventory - fills
Substituting the figures:
$25,500 + $3,000 + $14,000 - $20,000 - $8,000 = $14,500
The fill is subtracted because those chips were supplied by the casino and did not come from player losses. The credit is added because chips removed from the table still belong in the table's accountability for the shift.
The formula is simplified. Properties may separately account for markers, cash equivalents, promotional chips, foreign chips, jackpots, corrections, or other items. The operating principle remains the same: recorded internal transfers must be removed from the apparent change in the rack before table performance can be interpreted.
Three confusions that create bad explanations
“Credit” does not mean player credit
A table credit is not a marker, loan, or casino-credit account. It is a return of chip inventory from the table to the cage. The same word has a different meaning in casino credit.
A fill is not revenue
A $10,000 fill does not mean the table won $10,000. It means the property moved $10,000 of its own chips to a different accountable location. Treating the fill as income would overstate table performance.
A credit does not prove the table won
A busy winning table often accumulates chips and may send a credit, but credits can also result from denomination management or closing procedures. The transaction records inventory movement, not the cause of that movement.
What an operator checks when the numbers do not agree
A discrepancy investigation usually starts with direction, amount, denomination, table number, time, authorization, signatures or electronic approvals, and whether every required copy reached its destination. Staff may then compare the transaction with surveillance, cage records, the chip rack, the table inventory, and the drop.
A transposed fill and credit can distort the result by twice the transaction amount. If a $5,000 fill is wrongly entered as a $5,000 credit, one side of the formula should have been minus $5,000 but becomes plus $5,000—a $10,000 error in the calculated table win.
The practical memory aid is accurate but incomplete: fill in, credit out. The deeper point is that both slips preserve a chain of accountability between the table and the cage. Without that chain, a casino cannot reliably explain where its chips were, who approved the movement, or why the table result changed.