A Waiting Room, Not a Home
A suspense account is a temporary account in your general ledger. It holds an amount that you know has to go somewhere but cannot yet say where. Once you find out, you move the amount to the right account and the suspense balance goes back to zero.
That is the whole idea. It exists so the rest of the bookkeeping can carry on while one question is answered. It is a perfectly normal tool, and almost every set of books uses one at some point.
The trouble is that it is easy to put things in and tedious to take them out. We regularly pick up new clients whose suspense account has been growing quietly for two or three years. By then nobody remembers what the entries were, and the answers have become expensive to find.
This guide explains what a suspense account is for, how to clear one, and why we treat an old balance as a warning sign rather than a rounding issue.
What Is a Suspense Account in Accounting?
In double entry bookkeeping every transaction needs at least one debit and one credit of the same total. Sometimes you only know one side. The bank shows £4,800 arriving, so you know to debit the bank, but there is no reference and you have no idea what it was for. The suspense account takes the other side until you do.
It gets used in two quite different situations.
- The trial balance does not agree. If your total debits and total credits differ, the difference goes into suspense so you can produce figures while you hunt for the cause. This is the version taught in AAT and ACCA exams, and the one our trial balance guide touches on.
- A transaction cannot be identified. A payment with no reference, a card charge with no receipt, a customer payment that matches no invoice. You record the bank side correctly and park the other side in suspense.
In a manual or spreadsheet system, the first use is common. In cloud software it is close to extinct, and that changes what a suspense balance means in practice. More on that below.
Is a Suspense Account a Debit or a Credit?
It can be either. The balance simply takes whatever side is needed to make the books balance.
- If the trial balance credits exceed the debits, suspense carries a debit balance.
- If the debits exceed the credits, suspense carries a credit balance.
- An unidentified receipt into the bank creates a credit in suspense. An unidentified payment out creates a debit.
Is a Suspense Account an Asset or a Liability?
Neither, strictly. It is not a real asset or a real obligation. It is a placeholder for one that has not been named yet.
If a suspense balance does find its way onto a draft balance sheet, a debit balance would sit among current assets and a credit balance among current liabilities. But that should never happen in a finished set of accounts. A suspense account has no place in statutory accounts filed at Companies House, and if an accountant signs off a set with one, they have not finished the job.
The Errors That Do, and Do Not, Create a Suspense Balance
Only some bookkeeping errors throw the trial balance out. These are the ones that create a difference you would post to suspense:
- Single sided entries. Only the debit or only the credit was recorded.
- Different amounts on each side. £1,620 credited to the supplier but £1,260 debited to purchases.
- Casting errors. A column in a day book was added up wrongly.
- Two debits or two credits. Both sides posted to the same side by mistake.
- A balance missed off the trial balance. The ledger is right but the list is not.
These errors leave the trial balance perfectly in agreement and never touch suspense:
- Omission. The transaction was never recorded at all.
- Commission. Right type of account, wrong account, such as one customer's payment posted to another customer.
- Principle. Wrong type of account, such as a laptop posted to repairs instead of fixed assets.
- Original entry. The wrong amount was used on both sides.
- Complete reversal. The debit and credit were swapped.
- Compensating errors. Two mistakes that happen to cancel out.
This second list matters more than most guides admit. A zero suspense balance tells you the books are arithmetically consistent. It does not tell you they are right.
A useful trick from the old days still works. If the difference divides exactly by 9, look first for a transposition, where two digits were swapped. £1,620 keyed as £1,260 gives a difference of £360, and 360 ÷ 9 = 40.
A Worked Example: Clearing a Trial Balance Difference
Kestrel Tile Studio Ltd keeps its books in a spreadsheet. At the end of the quarter its trial balance shows:
| £ | |
|---|---|
| Total debits | 286,350 |
| Total credits | 286,890 |
| Difference | 540 |
Credits exceed debits by £540, so the bookkeeper opens a suspense account with a debit of £540 and produces draft figures. Then the search begins.
Error 1: a transposition. A supplier invoice for £1,620 was credited to the supplier at £1,620 but debited to purchases at £1,260. Debits are £360 short. The difference is divisible by 9, which is what pointed the bookkeeper here first.
| Journal | Debit £ | Credit £ |
|---|---|---|
| Purchases | 360 | |
| Suspense | 360 |
Error 2: a single sided entry. Quarterly bank charges of £180 were credited to the bank account but never debited to bank charges.
| Journal | Debit £ | Credit £ |
|---|---|---|
| Bank charges | 180 | |
| Suspense | 180 |
The suspense account now looks like this:
| Suspense account | Debit £ | Credit £ |
|---|---|---|
| Trial balance difference | 540 | |
| Purchases correction | 360 | |
| Bank charges correction | 180 | |
| Balance | 0 |
Cleared. Both corrections were expenses, so reported profit falls by £540. That is the honest figure. The original draft overstated profit, and if nobody had found the errors the company would have paid corporation tax on £540 it never earned.
Error 3: one the suspense account could never find. While checking purchases, the bookkeeper also spotted a £950 laptop posted to repairs. That is an error of principle. It has nothing to do with suspense because both sides were posted for the same amount, but it still needs fixing: debit computer equipment £950, credit repairs £950. Profit goes back up by £950, less depreciation, and the laptop may qualify for capital allowances instead.
So the end result of the review was that profit moved by more from the error suspense could not see than from the two it could. That is a pattern we see often.
How Cloud Software Changed the Suspense Account
Xero, QuickBooks Online, FreeAgent and Sage Accounting will not let you post a journal where the debits and credits differ. The trial balance always balances by design. So the textbook suspense account, the one that holds a trial balance difference, has almost disappeared from day to day work. The ACCA makes the same point in its technical guidance for students.
What has not disappeared is the second use. Bank feeds pull in every transaction automatically, and each one needs a code. When the person reconciling does not know the answer, they need somewhere to put it. Depending on the software, that might be:
- a Suspense account (Sage uses nominal code 9998 for this, with 9999 for mispostings, as our chart of accounts guide explains)
- an Uncategorised income or expense account, which QuickBooks creates for transactions imported without a category
- an account the bookkeeper creates called something like "Ask my accountant" or "Query"
- Xero's Historical Adjustment account, which absorbs differences when opening balances are entered, and which behaves like a suspense account even though it is not called one
All of these are the same thing with different labels. They hold amounts that someone has decided not to think about yet.
Our honest view is that this version is more dangerous than the old one. A trial balance difference is an arithmetic problem with a definite answer. An unexplained bank transaction is a question about what happened in the business, and the answer can change the tax position.
A Worked Example: Two Bank Transactions Nobody Recognises
Halden Studio Ltd, a small design company, reconciles its bank feed in Xero each month. Two lines are parked in a "Query" account in March.
A receipt of £4,800 from "J HARGREAVES" with no reference. Possible answers:
| What it turns out to be | Correct posting | Tax effect |
|---|---|---|
| A customer paying an invoice | Credit the customer's account | None now. The sale was already recorded. |
| A new customer's deposit for work not yet done | Credit deferred income | Taxed when the work is done |
| A sale nobody invoiced | Credit sales, and account for output VAT | Corporation tax and VAT due |
| The director topping up the company account from a personal account | Credit the director's loan account | None. The company owes the director. |
A card payment of £1,250 to an online retailer with no receipt. Possible answers:
| What it turns out to be | Correct posting | Tax effect |
|---|---|---|
| Office equipment | Debit fixed assets | Capital allowances. VAT only reclaimable with a valid invoice. |
| Consumables | Debit the relevant expense | Deductible |
| A personal purchase on the company card | Debit the director's loan account | No deduction. Could push the loan account overdrawn. |
In this case the receipt was a customer deposit and the card payment was personal. The bookkeeper fixed both in April and the answer was clear within a week.
Now imagine both had been left in the Query account until the year end eleven months later. The director no longer remembers the card payment. The customer deposit could be anything. The accountant has three bad options: guess, post them somewhere neutral and hope, or spend billable time reconstructing the story from emails. None of these is cheap, and only one of them is safe.
What an Old Suspense Balance Usually Turns Out To Be
When we clear long-standing suspense accounts for new clients, the balances tend to fall into a handful of familiar categories. In rough order of how often we see them:
- Director's personal spending. Card payments the director meant to explain later. These belong in the director's loan account, and if the account ends the year overdrawn the company may face a s455 charge of 35.75% on the balance, plus a possible benefit in kind on the director.
- Customer receipts that were never matched. Often a payment against an invoice that was raised in a separate system. The receivable stays open in the aged debtors report and the cash sits in suspense, so the business looks like it is owed money it already has.
- Unrecorded sales. Cash or transfers that are genuinely income but never had an invoice. These are the ones that matter most for tax.
- Duplicates and refunds. A supplier refund, a reversed payment, a transfer between the company's own accounts that only one side of was recorded.
- Loans and grants. Money from a lender, a family member or a public body that nobody coded because nobody was sure how.
Why HMRC cares
Under the Companies Act 2006, section 386, every company must keep accounting records that are sufficient to show and explain its transactions. A large suspense balance is, almost by definition, a list of transactions the records do not explain.
In a tax enquiry, HMRC's starting assumption is usually that unexplained money arriving in a business account is business income. It is up to you to show otherwise. If £15,000 of credits have sat in suspense for two years and nobody can say where they came from, you are in a weak position.
VAT has its own problem. A receipt in suspense is not in your VAT return. If it turns out to be a standard rated sale, output VAT was under declared. Small errors on past returns can be corrected on the next return, but HMRC's VAT Notice 700/45 requires a separate disclosure where the net error is over £50,000, or over £10,000 and more than 1% of your Box 6 figure, or where the error was deliberate.
How to Clear a Suspense Account
Whether you are dealing with one line or three years of build-up, the method is the same.
- List every entry. Export the suspense account with dates, amounts and bank descriptions. Do not work from the balance. A £2,000 balance might be £40,000 of debits and £38,000 of credits.
- Sort by size and age. Start with the largest. A handful of entries usually make up most of the balance.
- Check the obvious places first. Unpaid invoices of the same amount, supplier statements, the director's personal bank account, the company's other accounts, and any lender or HMRC correspondence. A remittance advice from a customer often answers a receipt in seconds.
- Post a journal for each answer. Debit or credit the correct account, with the opposite entry to suspense. Write a short narrative on every journal saying what the entry was and how you found out.
- Escalate what is left. Anything still unexplained goes to the director with a specific question, not a general one. "What was the £1,250 to Amazon on 14 March?" gets an answer. "Can you look at suspense?" does not.
- Decide on what cannot be traced. For tiny residual amounts, writing off to the profit and loss account may be sensible and is a judgement call for your accountant. For anything material, the treatment should reflect the most likely explanation, and unexplained receipts should not be quietly written off against expenses.
Then fix the process so it does not refill. That usually means reconciling more often, getting receipts at the point of purchase and keeping personal spending off the company card.
Our Rules for Suspense Accounts
These are the rules we apply to our own clients' books. They are stricter than the textbook, and deliberately so.
- Zero at every month end, or every line explained. A suspense balance with a note against each entry is fine. A balance nobody can describe is not.
- Nothing older than 30 days. Memories fade fast. After a month, a ten second answer becomes an hour of digging.
- One suspense account only. Separate "Query", "Unknown" and "Ask accountant" accounts just spread the problem around and hide its true size.
- Never use it to force a bank reconciliation. If the bank reconciliation does not agree, find out why. Plugging the gap with suspense turns a clear problem into a hidden one.
- Review it before every VAT return. Under Making Tax Digital, your VAT return is built straight from the ledger, so anything in suspense is left out automatically.
Lenders, buyers and auditors all look at the suspense account. A clean one says the books are under control. A large, old balance raises questions about everything else.
Other Meanings of "Suspense Account"
The term turns up outside small business bookkeeping too, so it is worth knowing which one you are reading about.
- Banks use a suspense account for incoming payments they cannot match to a customer account, for example because the account number is wrong.
- Mortgage lenders hold partial payments in suspense until a full monthly instalment has built up.
- Investment platforms and brokers may hold cash in suspense between selling one investment and buying another.
The principle is the same in every case. Money is held to one side while someone works out where it belongs.
Common Mistakes
- Treating a zero balance as proof the books are right. Errors of omission, commission and principle never pass through suspense.
- Leaving it until the year end. The cost of clearing an entry rises with every month it sits there.
- Writing off unexplained receipts. If you cannot say what money was, HMRC may decide it was income.
- Using suspense for personal spending. It belongs in the director's loan account, and leaving it in suspense can hide an overdrawn balance and an s455 charge.
- Showing suspense in the final accounts. It should be cleared before the accounts are finalised and never appear on the filed balance sheet.
How IAK Can Help
We work with small businesses and limited companies across North London and Hertfordshire, and clearing an inherited suspense account is one of the most common first jobs we do for new clients.
Our bookkeeping team reconciles your bank feeds every month and chases unexplained items while the answer is still easy to find. We set up and support Xero so that transactions are coded correctly from the start, with bank rules that cut down on queries. Our accounting team then takes clean balances through to year-end accounts, corporation tax and the director's loan account, with nothing left in suspense.
If your books have a suspense balance nobody can explain, get in touch for a free consultation and we will tell you honestly how big a job it is.
Sources
- Companies Act 2006, section 386, legislation.gov.uk, the duty on every company to keep adequate accounting records that show and explain its transactions.
- How to correct VAT errors and make adjustments or claims (VAT Notice 700/45), GOV.UK, for the £10,000, 1% of Box 6 and £50,000 thresholds for correcting past VAT errors.
- Correct errors in your VAT return, GOV.UK, the summary guidance on correcting VAT returns.
- Directors' loans, GOV.UK, for the tax treatment of an overdrawn director's loan account.
- Financial Accounting technical articles, ACCA, including its article on suspense accounts and error correction in manual and computerised systems.