What Do Bookkeeper Interviews Actually Test?

Who actually interviews you

For most bookkeeping roles the first interview is with whoever you'd report to day to day: an office manager, a finance director, or the owner if it's a small practice. If you get to a second stage, it's often with the person whose ledgers you'd be taking over, or a partner if the role is client-facing bookkeeping inside an accountancy firm. Larger outsourced-bookkeeping employers sometimes bring in a training or technical lead alongside the line manager. If a recruitment agency sourced the role, there may be a screening call first with the recruiter — that conversation is about availability, salary and general fit, not competence, so don't mistake it for the real assessment.

The practical test, if there is one

Not every bookkeeper interview includes a hands-on exercise, but plenty do, because the job is judged on accuracy, not on how well you talk about accuracy. Common formats:

• A bank reconciliation exercise: you're given bank statement lines and a partial cash book and asked to reconcile them and explain any discrepancy.
• A trial balance with deliberate errors planted in it — a mispostings, a transposed figure, an account that doesn't tie out — and you're asked to find them.
• A screen-share task in the actual software: log into Xero, QuickBooks Online, or Sage 50/Sage Business Cloud and post a journal, run a VAT return, or code a batch of bank feed transactions.
• A short written coding exercise: a stack of supplier invoices to allocate to the correct nominal codes.

What this is really testing isn't whether you can find a menu — that's learnable in an afternoon. It's whether you understand what the transaction is before you record it: is this capital or revenue expenditure, does it need to sit in a control account, does the VAT treatment change if the supply is zero-rated rather than exempt.

The questions that are actually probing competence

Some questions are conversation. These are the ones with a real answer behind them.

"Talk me through how you'd deal with a bank account where the closing balance doesn't match the statement." This checks method: do you work through it systematically, check for unpresented cheques and outstanding lodgements, check for duplicate postings, check the opening balance carried forward correctly from the prior period.

"Walk me through your process for filing a VAT return under Making Tax Digital." This tests whether you've actually filed MTD returns, not just heard the term. A real answer covers reconciling the VAT control account before submission, checking for adjustments such as partial exemption or reverse charge, and how the return leaves the software — whether that's direct filing or bridging software — plus what digital record-keeping MTD actually requires.

"How do you handle accruals and prepayments at month end?" A competent answer gives an example: an annual subscription invoiced in January and spread over twelve months, or a bonus accrued in December with no invoice yet received. Someone who can't produce an example on the spot probably hasn't been doing it themselves.

"What do you do if the trial balance won't balance?" The real process: check for one-sided entries, look for a transposition error (the classic being a difference divisible by 9), check whether a suspense account has been left open.

"How do you decide which nominal code an invoice belongs to when it's not obvious?" This tests whether you ask someone or guess and move on — guessing is the more common failure and the more expensive one.

"Have you managed multiple client ledgers at once?" — relevant if the role is inside a practice rather than in-house. It's testing context-switching, confidentiality between clients, and comfort working across different chart-of-accounts structures rather than one company's fixed setup.

"How would you chase an overdue invoice without damaging the client relationship?" Tests both the communication and whether you actually run an aged debtor report and follow a defined escalation, rather than sending an email when you remember to.

Qualification questions are worth taking seriously too. "Are you AAT qualified, or through ICB or IAB?" is often followed by "what level, and what did that cover?" An interviewer who does this job themselves will know the difference between AAT Level 2 and Level 3, and a vague answer here reads the same as a vague answer on VAT.

What a shallow answer sounds like

Anyone who does this job for a living hears the gap immediately.

Shallow: "I'm very detail-oriented, I double-check everything." No process named, no example, nothing that shows what actually stops an error reaching the accounts.

Shallow on VAT: "I make sure the return is correct before I submit it." No mention of reconciling to the VAT control account, no mention of how an error gets corrected once found — through HMRC's error correction process or an adjustment on the next return, depending on the size of the error.

Shallow on software: "I'm confident with all accounting packages." Someone who's actually used them names a specific difference — for instance, that Xero's bank rules speed up coding but still need checking weekly because they misfire on split payments, or that Sage handles cost centres differently from Xero's tracking categories.

Shallow on reconciliation: "I match the bank statement against the system." No mention of timing differences, no account of what happens when the two don't agree.

Shallow on accruals versus prepayments: an answer that mixes the two up, or that gives the journal mechanics without an example transaction.

Shallow on mistakes: "I don't really make errors." This is read as either inexperience or evasion. A stronger answer names a specific one — a mispostings that skewed a P&L line, caught at review when a client queried why office costs had doubled — and what changed as a result.

What to do before the interview

• Know your qualification precisely: the body (AAT, ICB, IAB), the level, and what units it covered — not just the name.
• Name the software you've actually used, and be ready with one honest limitation of each, not just a strength. It signals real use rather than a demo.
• Prepare one concrete example each for: a reconciliation discrepancy you found and resolved, a coding decision you were unsure about and how you resolved it, and a deadline you nearly missed — a VAT quarter-end or payroll cutoff — and how you managed it.
• If the role is practice-based, expect questions about managing several clients at once; if it's in-house, expect depth on one company's specific processes and systems.
• If you know a practical test is coming, ask in advance which software and version — Xero and Sage lay things out differently, and you don't want to lose time hunting for a menu in the room.

jobmarket.pro reads the bookkeeper advert in full and prepares the application from one profile before any of this, which is a separate problem from the interview itself but worth knowing exists.