How to Calculate Float: Disbursement, Collection, and Net

To calculate float, you compare two numbers and build two lists: your book balance (what your ledger shows) against your bank balance (what the bank shows), with a list of outstanding checks and a list of deposits that haven’t cleared. The gap between those balances, broken down by direction, gives you disbursement float, collection float, and net float. Here is how to calculate float step by step, with the formulas and worked examples.

What You Need Before You Start

Pull two numbers first. Your book balance is the cash total in your accounting software or checkbook register after you’ve recorded every check written and every deposit logged. Your bank balance comes from your online banking portal or most recent statement. These two figures will almost never match on a given day, and the gap is what you’re measuring.

Then build two lists. Outstanding checks are payments you’ve written and recorded but that haven’t cleared the bank yet. Deposits in transit are funds you’ve handed to the bank or submitted electronically that don’t yet appear in your available balance. Building these lists is the grunt work of float calculation, and it doubles as the core of a proper bank reconciliation: start with the bank statement balance, add deposits in transit, subtract outstanding checks, and compare that adjusted figure to your book balance after accounting for any bank fees or direct deposits you haven’t yet recorded.

Calculating Disbursement Float

Disbursement float measures money you’ve committed on paper but that hasn’t left your bank account yet. The formula:

Disbursement float = Bank balance − Book balance

When your bank balance is higher than your book balance, the difference represents checks you’ve written that are still working their way through the clearing system.

Say your book balance is $42,000 and your bank balance is $50,000. The $8,000 difference means you have $8,000 in outstanding checks. The bank hasn’t deducted them yet, so the cash is technically still in the account, but it’s already spoken for.

Average Daily Disbursement Float

A single snapshot doesn’t tell you much about the ongoing pattern. To measure sustained impact:

Average daily disbursement float = (Check amount × Days to clear) ÷ Days in period

Write a $6,000 check that takes four days to clear during a 30-day month, and that check contributes $800 per day to your average disbursement float ($6,000 × 4 ÷ 30 = $800). With multiple outstanding checks, repeat the multiplication for each one, sum the results, and divide by the days in the period. The final number tells you how much extra cash, on average, was sitting in your bank account each day because of clearing delays.

Calculating Collection Float

Collection float runs the other direction. It measures money your books say you have but that the bank hasn’t made available yet.

Collection float = Book balance − Bank balance

When your book balance is higher, the difference represents deposits you’ve recorded internally but that are still being held. Money you can see in your ledger but can’t spend.

If your book balance shows $55,000 and the bank balance shows $48,000, you have $7,000 in collection float: $7,000 in deposits waiting to clear.

Average Daily Collection Float

Same structure as the disbursement version:

Average daily collection float = (Deposit amount × Days on hold) ÷ Days in period

A $10,000 check deposit held for two business days in a 30-day month produces an average daily collection float of about $667 ($10,000 × 2 ÷ 30). Stack up all your pending deposits the same way, and the total gives you the average daily capital locked up in clearing.

Calculating Net Float

Net float combines both sides into a single number.

Net float = Disbursement float − Collection float

A positive net float means your disbursement float is larger than your collection float. The bank is holding more of your outgoing payments in limbo than your incoming ones, so your bank account has more usable cash than your books suggest.

A negative net float is the dangerous position. Your ledger shows more money than the bank will let you spend. If you write checks against that inflated book balance, they may bounce when they hit the bank, which can trigger returned-item fees, penalties under the payee’s state bad-check statute, and the reputational damage of a bounced payment.

Worked Example

Your bank balance is $25,000 and your book balance is $20,000. You have $5,000 in outstanding checks (disbursement float = $25,000 − $20,000 = $5,000). You also deposited a $3,000 check yesterday that the bank is still holding, so collection float is $3,000. Net float is $5,000 − $3,000 = $2,000 (positive). The bank has $2,000 more in usable funds than your books reflect.

Reverse it. Your book balance is $30,000, your bank balance is $22,000, and you have $2,000 in outstanding checks plus $10,000 in deposits waiting to clear. Disbursement float is $2,000. Collection float is $10,000. Net float is $2,000 − $10,000 = −$8,000. Your books are overstating your actual available cash by $8,000. Spend based on the book balance and you’ll overdraw the account.

Estimating Days to Clear

The formulas depend on a “days to clear” figure, and that number isn’t arbitrary. For paper checks, it accumulates across three distinct phases.

Mail Float

Mail float is the time a check spends in the postal system. Current USPS First-Class Mail service standards range from one to five days, with local mail (within 50 miles of the processing center) targeting a two-day delivery window and longer-distance mail potentially taking three to five days.¹ This phase only applies to paper checks sent by mail.

Processing Float

Once the recipient has the check in hand, processing float covers however long they wait before depositing it. A business that batches deposits weekly could sit on your check for days. An individual might deposit it the same afternoon through mobile capture. You can’t control this phase, which makes it the hardest to estimate.

Availability Float

After deposit, the receiving bank decides how quickly to release the funds based on schedules set by federal regulation. Under Regulation CC, the first $275 of any check deposit that isn’t otherwise eligible for immediate availability must be released by the next business day.² Beyond that initial amount, the full deposit from a standard check must be made available within two business days, while checks drawn on more distant institutions can be held up to five business days.³ Banks can extend holds further if they have reason to doubt a check will clear, potentially pushing the total to eleven business days.

Cash and electronic payments are faster. Cash deposited in person at a teller must be available the next business day, and incoming wire transfers or ACH credits often post the same day.² Deposits made at an ATM your bank doesn’t own can take up to five business days to clear. Mobile deposits made after the bank’s daily cutoff count as the next banking day’s deposit, so a Friday evening submission may not start clearing until Monday.

Add the realistic figures across the three phases for each check or deposit, and that total is the “days to clear” or “days on hold” value you plug into the formulas.

When Float Calculations Don’t Apply

Some payments settle too fast for float to be worth measuring. Same-day ACH can move funds within hours of submission, and real-time rails such as the Federal Reserve’s FedNow Service and the private RTP network settle in seconds with instant finality.⁴⁵

1
U.S. Postal Service. Changes in Service Standards – FAQs
2
Federal Reserve Board. A Guide to Regulation CC Compliance
3
eCFR. 12 CFR Part 229 – Availability of Funds and Collection of Checks (Regulation CC)
4
Federal Reserve Financial Services. FedNow Service Raises Transaction Limit to $10 Million
5
The Clearing House. 18 USC 1344 – Bank Fraud