Your register and your accounting ledger can both show correct balances while your bank account gives you a different answer about what's available for bills. Cash float is the reason: some cash has to stay in the drawer as opening change, and some payments are still moving between your records and the bank.
Treating every recorded dollar as spendable can turn an ordinary payroll run, supplier payment, or equipment purchase into a shortfall. Cash float comes in two forms: operational float is the change you keep in a drawer, and timing float comes from payments that your books and your bank record on different dates.
The two meanings of cash float
Register change and payments in transit create two separate types of cash float. Keep them separate, because one concerns physical cash on site and the other concerns timing differences between your books and your bank.
Operational float
You use an operational float to start each day with enough small bills and coins to make change before sales begin. The float doesn't count as revenue or an expense.
Card payments dominate consumer spending, but cash hasn't gone away. Four out of five consumers used cash in the 30 days before the Federal Reserve's 2026 Diary of Consumer Payment Choice, so a drawer that can't make change still costs sales. The same logic applies to a market stall with a cash box or a service van that carries change.
Timing float
A payment creates timing float when your books record it on one date but your bank posts it on another. The gap closes when both records show the payment. Drawer cash stays on site, so leave it out of timing-float calculations.
How to set and reconcile an operational float
Set a fixed operational float from the change your drawer needs on a typical morning. Track how much change customers need over a typical week before setting the amount.
Set the amount
Note any change shortages, which denominations run out first, and how much cash customers need during opening hours.
A fixed float makes shortages and overages stand out during the nightly count instead of hiding behind a changing target. If the drawer repeatedly runs out of fives before lunch, raise the float and hold the new amount steady rather than topping it up whenever a shortage appears.
Reconcile the float
Reconcile the drawer against its fixed opening amount at closing. When a register closes with more cash than its opening float, account for every documented drawer movement first: refunds, paid-outs for documented expenses, cash drops to a safe, tips, and anything else recorded in your drawer log.
Have your employee record each movement when it happens instead of waiting until closing. The log should identify the register and amount, state the reason, name who approved it, and include the supporting receipt or refund record.
At closing, match each entry to the cash removed or added. If the count still shows an overage or shortage, record the unresolved amount separately and send it to your manager, who can investigate repeated differences tied to the same shift, denomination, or transaction type without changing the fixed opening float.
Use this operational reconciliation formula: Expected Closing Drawer = Opening Float + Net Cash Sales + Cash Added − Cash Removed. Cash Removed excludes refunds you already deducted when calculating net cash sales. A $150 opening float plus $620 in net cash sales and $20 added, minus $50 removed, produces an expected closing drawer of $740.
How payment float changes your balances
Outgoing and incoming payments affect available cash in opposite directions while they're in transit. Outgoing payments can make the bank balance look higher than safe spending allows, and incoming payments can appear in your books before the cash becomes available.
Disbursement float
An outgoing payment creates disbursement float during the window between when you record it in your books and when the bank actually removes the cash from your account. An uncashed supplier check is the classic example: you deduct the amount from your ledger the day you mail it, the supplier may take days or weeks to deposit it, and the bank needs additional time to clear it. ACH payments, wire transfers scheduled for a future date, and bill-pay drafts can create the same gap. During this window your bank balance looks higher than the cash you can safely spend, so check disbursement float before you commit to payroll or another large outflow.
Collection and net float
An incoming payment creates collection float after you record the money but before you can use it. A card payment may still be settling; a check may still be in the mail. For an online store, the card batch can reach the bank after the sales appear in the storefront dashboard.
Track these two gaps separately, then use net float to show their combined effect. Subtract collection float from disbursement float: Net Float = Disbursement Float − Collection Float. An $800 uncleared supplier check and a $500 pending card settlement create $300 in net float.
When disbursement float exceeds collection float, your bank balance overstates what you can safely spend. When a pending card settlement exceeds an uncleared check, net float is negative. Check net float before you approve payroll or buy equipment, and compare each expected payment's settlement date against the payroll debit date.
Reconcile payments in transit
Reconcile payments in transit before using the bank balance to plan upcoming bills. Banks use the Automated Clearing House (ACH) network to send electronic bank-to-bank payments, and transfers you've initiated but the bank hasn't posted belong in the reconciliation whether the money is moving in or out.
Reconcile each period in five steps:
List outstanding checks and ACH transfers, then add card batches that are still settling. Record the amount and the date you expect each item to clear or arrive.
Subtract outstanding checks and other uncleared outgoing payments from your bank balance. These items make the balance look higher than the amount you can safely spend.
Add pending incoming settlements to see what should arrive.
Match the adjusted amount against your accounting balance, then trace any difference.
Follow up when an item passes its expected settlement date instead of carrying it into another reconciliation.
Give each outstanding item an owner and a follow-up date. Otherwise, unresolved transfers roll into the next reconciliation with no one responsible for clearing them.
Connecting bank activity to your accounting records cuts down the manual matching this list describes. Relay connects to QuickBooks Online and Xero with a two-way sync, so bank activity and book entries stay close enough together to compare.
How to forecast closing cash
Forecast closing cash by adding expected inflows to your opening balance and subtracting expected outflows: Closing Cash Balance = Opening Balance + Cash Inflows − Cash Outflows. The formula forecasts ending cash only; payment float needs the separate calculation above.
Compare the result with your bank balance. A widening gap may reflect payments in transit, changed timing, missing transactions, or forecast assumptions that need updating.
If the difference between your bank and book balances grows from one reconciliation to the next, customers may be paying more slowly, or your own payments may be stacking up without clearing. Chase down either problem before the next payroll run.
Sizing and storing a reserve for timing gaps
Keep enough cash in reserve to pay the bills that fall between sending money to a supplier and receiving money from a customer. If you pay a supplier on Monday and customer money arrives Friday, the reserve has to cover everything due in between. That interval is your transaction timing gap, and the reserve is what carries the business across it.
This gap is a common pressure point. In the Federal Reserve's 2025 Report on Employer Firms, 51% of employer firms cited uneven cash flows as a financial challenge.
Calculate the cash conversion cycle
Cash Conversion Cycle = Days Customers Take to Pay + Days of Inventory − Days You Take to Pay Suppliers
If you pay suppliers before receiving customer payments and hold inventory before making a sale, add the customer payment period to the time inventory sits on hand, then subtract the time you have to pay suppliers. The cash conversion cycle estimates how long your operations usually need cash before customer money arrives; it doesn't predict when one specific payment will land. Base the reserve on the cash you expect to spend during the gap, then add extra for uneven expenses.
Account for overlapping jobs
Service businesses that buy materials up front face the same gap. Prepaid materials leave at the start of a job, and the client may release the progress draw, a partial customer payment, only after an inspection. When jobs overlap, use projected net cash outflows to check whether the reserve needs to cover several prepayments at once.
Keep the reserve available
When an expense comes due before a client's card settlement arrives, hold the reserve in a separate checking account so nothing else draws it down. Relay lets you set fixed or percentage-based transfer rules that rebuild the reserve as revenue arrives, which takes refilling it off your monthly to-do list.
Cash float vs. petty cash
A cash float provides change in a register; petty cash pays for small purchases that you match to receipts before replenishing the box. A petty cash box may hold both remaining cash and a receipt for a purchase already made.
The two get confused because both involve physical cash kept on site, and both usually fit in a drawer or lockbox. They behave differently in your books, though. For the register float described above, any difference at close signals a counting error worth investigating. A petty cash box with a fixed balance might cover stamps and a parking fee, and you replenish it to that balance once the receipts are reconciled.
Keep them physically separate and give each one its own log. When the same drawer serves both jobs, every reconciliation turns into an argument about whether missing cash paid for a purchase or disappeared through a mistake.
Separate committed cash before spending it
Register change and payments in transit both sit inside numbers that look available, and neither one is. Keeping them in their own accounts means the balance you check before approving a payment is already net of what's spoken for. Give one person responsibility for reviewing outstanding payments at each reconciliation.
Relay lets you hold register change, cash-gap reserves, and operating money in separate checking accounts, so committed cash never shows up in the balance you spend from. Open a Relay account to give each pot of money its own place before the next payroll run.
Frequently asked questions
How much cash float should a small business keep in the register?
Keep enough to cover the change customers typically need before sales replenish the drawer. Track early change demand, set a fixed amount from that pattern, and adjust it only when repeated shortages show the target is too low.
Is a cash float an asset or an expense?
A register float is a cash asset. Payment-timing float is a reconciliation difference; it doesn't appear as its own asset or expense. A cash payment counts as an expense only when it pays for one, since it may instead buy an asset, repay debt, or pay the owner.
What's the difference between cash float and cash flow?
Cash flow tracks money moving into and out of your business over time. Cash float refers to register change or cash caught between your books and your bank account at a single point. Healthy quarterly cash flow can still come with a temporary squeeze while customer payments settle.
Why is my bank balance different from my accounting balance?
Payments in transit usually explain the difference. Uncleared outgoing payments may still sit in your bank balance, and pending incoming settlements may already appear in your books before they reach your account.
Can a cash float be negative?
Net float can be negative when collection float exceeds disbursement float. A projected closing balance can also fall below zero and signal a forecast shortfall, though physical cash on hand can't. Pause optional purchases or follow up on outstanding invoices before committing to another one.
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