Income audit in hotels: what the day audit checks after night audit

Income audit is the daylight check that what the night audit closed is correct: accounting compares posted rates with contracts and quotes, outlet sales with room charges and fiscal device totals, and every void, allowance, complimentary room and city ledger transfer with its approval. Night audit closes the business day; income audit tests it.

The night audit finishes, the day balances, and the morning report goes out. For example, a corporate guest later asks why his bill shows the rack rate instead of the rate in his company's contract, and nobody can say who posted it or when. The day balanced. It was still wrong. After reading this article you will know what an income audit in a hotel checks, which exceptions deserve a phone call, and which five checks to keep if you cannot staff the role.

What is income audit, and how is it different from night audit?#

Night audit closes the business day and proves it balances. Income audit is the next-day check, done by accounting in daylight, that what was closed is also correct.

Night audit runs at the front desk on the business date: it posts room and tax, closes the day and produces the daily revenue report. Those steps belong to that job, not this one. Income audit runs afterwards, on the same closed data, and asks a different question: not whether the day balances, but whether each figure has a document behind it.

Balance is arithmetic. Correctness needs a second record: the contract, the quote, the approval, the outlet's own sales summary or the fiscal device total. Separation of duties is the whole point: the person who posted should not be the person who certifies. In a small hotel that is often impossible, so write down the compromise and who reviews it.

Who closes, who checks#

The output of an income audit is not a report but a list: exceptions, each with an owner and a due date. Timing matters, so do it the same morning where possible, while the front-office team that posted is still on shift or reachable by phone. Income audit is common practice, not a statutory role; confirm with your accountant what your own obligations require. For the closing routine itself, see the night audit checklist: closing the hotel business day in order.

Why a balanced day is not a correct day#

A rate posted below contract, a restaurant charge routed to the wrong bill and an allowance without approval all keep debits equal to credits. Double-entry bookkeeping cannot detect them, because none of them breaks the arithmetic. Only comparison with a second record can.

How do you check posted rates against contracts and quotes?#

Compare every room charge with the rate that should have applied, not with the rate that was posted. Each difference is a variance, and every variance needs a document behind it.

Start from a rate check report: reservations in house, with rate code, contracted or quoted rate, posted rate, variance and amount, sorted by size so the big ones surface first. The "should" comes from four places: corporate and agency contracts, allotment agreements, package rates with their breakdown, and the quote given on a direct booking.

Package rates must be split into room, breakfast and other components before comparison, otherwise every package looks like a variance. Manual overrides need a rule: who may change a rate at the desk, up to what percentage, and what note is required on the reservation.

Rate codes and package splits#

Set a tolerance. Below it, sample; above it, call the person who made the booking and ask for the document. Foreign-currency bookings create a second variance between the rate at booking and the rate at posting, so record both, and ask your accountant which rate applies for tax purposes. Send the list to reservations and the front office the same day, not to a folder.

How do outlet sales, room charges and fiscal device totals get reconciled?#

Three records must agree for every outlet: what the outlet's own system recorded as sold, what was posted to guest bills and house accounts, and what the fiscal device printed.

The outlet's sales summary proves what was sold. The posted charges prove where it went. The fiscal device total proves what was legally recorded. Each pair can fail on its own. Transfers are the bridge: a restaurant charge moved to a room bill leaves the outlet total unchanged but changes where it sits, so the transfer log must explain the difference between the two records.

Separate guest charges from house charges, such as staff meals, entertainment and complimentary items, and require approval for the second group. Discounts and service charges change the amount the guest pays but not the number of covers, so keep both figures or the outlet's performance becomes unreadable. Tenders are a separate reconciliation: the till count must match the device's payment totals, not its sales total.

What a mismatch usually means#

A void after the fiscal receipt is printed is a different problem from a void before it, because the device has already recorded the sale. How a printed receipt is cancelled depends on the device and local practice, so route the question to your accountant; the article on ÖKC in hotel outlets: fiscal devices, room charges and invoices covers the device side. Know the cut-off: an outlet that closes after midnight posts into the next business date, and that timing difference is not an error.

Which voids, allowances and complimentary rooms need a phone call?#

The ones with no reason, no approver, or a pattern. The amount alone is a poor filter, because small repeated adjustments hide more than one large one.

Keep the three terms apart. A void removes a posted charge and leaves a reversal line. An allowance reduces the amount without removing the original line. A correction moves the charge to the account it belonged on. Each one needs a reason code, an approver and a reference such as a complaint ticket, a manager's initials or a reservation note.

Write the thresholds down: what the desk may approve, what needs the duty manager, what goes to the general manager. A threshold that lives in memory is not a control. The method is described in how to void a folio charge without breaking the audit trail.

Void, allowance, correction#

Red flag on timing: a void posted after the guest checked out, or after the bill was closed and the day ended. Red flag on pattern: the same user, the same outlet, the same hour of the night, week after week.

Complimentary rooms need a reason and an approver, and they also change your reported numbers. Under CoStar Group's STR Benchmark reporting guidelines (opens in a new tab) (Historical Benchmarking Data Reporting Guidelines, 1 November 2026), only revenue-generating rooms count as rooms sold, complimentary rooms are excluded, and rooms revenue is reported net of rebates, refunds, allowances, overcharges and taxes. The same guidelines treat refunds for a product or service problem as a reduction of rooms revenue, so a refund is a revenue event, not only a guest-relations one.

How do city ledger transfers and deposits get checked?#

A transfer to the city ledger is a promise to collect later, so the check is whether the right account, the right reference and the right credit terms sit behind it.

City ledger means balances moved off the guest bill to a company or agency account, to be invoiced after departure. Every transfer needs three attachments: a booking reference, a rate agreement and a credit arrangement. A transfer without a reference is an unbilled balance waiting to be discovered months later.

Deposits and advance payments must be applied to the reservation they belong to, not left floating on the account. A deposit on a cancelled booking needs a decision, not silence. Split bills are decided at check-in through routing, not improvised at check-out when the guest is standing at the desk.

Deposits, routing and ageing#

Ageing is the income auditor's instrument here: how old is the oldest unbilled transfer, and whose name is next to it. The front-office city ledger total must equal the ledger in accounting. If the two systems disagree, find the entry that exists in one and not the other before month end. The article on the hotel city ledger explained: invoicing agencies and companies covers the invoicing side.

What goes on the exception list, and who answers each line?#

One line per exception, with the amount, the source report, the person who must answer and the date it must be closed.

Columns that work: business date, item, amount, source report, owner, due date, status, resolution. Anything more becomes a project. Assign by cause, not by department, and track the close rate, not the count. An exception that stays open for weeks has quietly become policy.

Who owns which line#

Frame the list as a request for the missing document, not for a culprit. The moment it becomes a blame list, people stop recording adjustments and start hiding them. Escalate by amount: anything above a set figure goes to the general manager the same day, not in the weekly summary. Send the general manager three numbers a week: open items, the oldest item, and how many closed.

What is the minimum set of checks for a small hotel?#

Five checks, done on a fixed day, signed by someone who did not post the entries.

The five: rate variances above tolerance, outlet sales against posted charges and the device total, voids and allowances without a reason, complimentary and house-use rooms without approval, and city ledger transfers without a reference. Frequency follows cash and outlets: daily if there are several sales points and cash handling, weekly with a full sweep if not.

Who does it: the owner, the accountant or the general manager, never the person who posted the entries. If that is unavoidable, have a second person sign monthly. Keep the evidence: one signed sheet per period, listing the exceptions found and how each was closed. The sheet is what turns a habit into a control.

A weekly sheet for a hotel without an income auditor#

Drop first: sampling small variances, deep analysis of a single quiet outlet, and any report nobody reads. Never drop: the void and allowance reason check and the city ledger reference check, because both are where money leaves quietly.

What to do next#

Pick one business date from last week and run the five checks on it, then write down every question you could not answer. Night audit closes the day; income audit is the list of questions that closing leaves open, and the list is only worth something if each line has a name and a date.

The trail matters as much as the check. A hotel operating system should be built so that financial records are never deleted: corrections are voided and reversed, and night audit closes the business day. That gives an income auditor a trail to read. It does not do the checking for them. AI Otel's hotel operating system, for example, is built with this approach: financial records are never deleted, corrections are voided and reversed, and night audit closes the business day. If you want to see how that works, request a briefing at https://ai-otel.com/contact.