Invoice AuditorRead-only books-integrity agent for QuickBooks
AP Duplicate Payment & Overcharge Detection for QuickBooks Online
Your AP team pays hundreds of bills a month — the costly ones never look wrong on their own. A free, read-only AI agent reads the whole ledger and surfaces the duplicate payments, overcharges, and stranded credits worth a second look, with the evidence behind every flag.
Start free — no credit cardFree to use · No credit card · Read-only QuickBooks access · 2-minute setup
Where money leaks past an AP team
An accounts-payable team is fast, careful, and reviewing one bill at a time — which is exactly the seam money slips through. A payment entered by hand, then pulled in again by the bank feed, becomes two records QuickBooks never compares. A purchase split into three bills, each just under the sign-off limit, clears because no one sees the cluster. A unit price creeps up between orders while the totals keep changing. None of it looks wrong per bill. It only shows up when something reads across the whole ledger at once.
AP duplicate payment detection across every record
Connect QuickBooks Online read-only and the AI agent reads the ledger across object types — bills, bank-feed expenses, and checks alike — and recognizes one real payment no matter which form it took. It surfaces the records that are potentially the same money for your review, each pair laid out with vendor, amount, date, and object type so an AP reviewer can confirm in seconds. This is the duplicate QuickBooks structurally can't see, because the two records are never lined up against each other. The agent flags; your team decides. We never touch your books.
Sixteen checks and a Books Integrity Score
Duplicates are one of sixteen checks the agent runs in a single read-only pass. It also surfaces ghost or shell vendors carrying the fingerprints of a fabricated payee, split-bill clusters shaped to slip under an approval threshold, silent unit-price creep on recurring items, vendor credits that were issued but never applied, and recurring-charge drift across the year. Every file gets a 0-100 Books Integrity Score so an AP lead can see at a glance where a file stands and which findings deserve the team's attention first.
Evidence behind every flag, built for review
Nothing arrives as a verdict. Each flag is a diagnostic with its evidence attached — the matching records, the vendor, the dates, the threshold a cluster slipped under, or the per-year cost of a price that stepped up and stayed up. The agent shows its work so a human can confirm whether a flag is a true duplicate, a legitimate separate payment, or a price change that was agreed. That makes it a real internal-control layer your AP team can defend, not a black box that hands down conclusions.
How an AP team runs it in about two minutes
Sign in with Google, connect QuickBooks Online with read-only access, and the agent reads the period you choose and surfaces its findings in roughly two minutes. It's free to use, with no credit card required, and it never writes, edits, or deletes anything in the file. An AP team can run it before a close, after a busy payment run, or on a new client file during onboarding — wherever a second set of eyes across the whole ledger would catch what per-bill review can't.
Find it in your books
Run a free, read-only scan of your QuickBooks.
Sign in with Google, connect QuickBooks, and see your findings in about two minutes — no credit card.
Start free scan See a sample report →Frequently asked
How do I detect duplicate payments in QuickBooks across an AP team?
Connect QuickBooks Online read-only to the AI agent and it reads the ledger across object types to surface payments that are potentially the same money in two forms. QuickBooks can warn about an exact duplicate bill number, but it doesn't compare a hand-entered bill against the same payment pulled in by the bank feed — they're different record types, so they're never lined up. The agent recognizes one real payment no matter which form it took and presents each pair with vendor, amount, date, and object type for your team to confirm.
Can QuickBooks catch vendor overcharges and price increases on its own?
Not reliably, because QuickBooks records each bill but doesn't trend a unit price across purchases. When order quantities vary, no bill total repeats, so a price that quietly stepped up and stayed up never stands out. The AI agent reads the item lines read-only across purchases for the same item and vendor, surfaces the moment the unit price increased, confirms it held, and puts a per-year figure on it at the client's actual purchase rate — framed as a price change to confirm, for your review.
Is it safe to connect a client's QuickBooks for an AP review?
Yes, because the agent connects read-only through the official QuickBooks Online authorization and never writes, edits, or deletes anything. It reads the ledger to surface potential duplicates, overcharges, ghost vendors, and unapplied credits, then shows its work so your AP team can verify each flag. We never touch your books — the agent flags, you decide.
What does AP duplicate payment detection cost?
It's free to use, with no credit card required. Sign in with Google, connect QuickBooks Online read-only, and the agent surfaces potential duplicate payments and the rest of its sixteen checks across the period you choose, usually in about two minutes.
Will the agent flag legitimate payments that just look similar?
It can surface them, but it always presents each one as a pair for review rather than declaring anything certain — vendor, amount, date, and object type laid out side by side. A human on your AP team confirms whether it's a true duplicate or a legitimate separate payment. It's a diagnostic that points your reviewers to what deserves a second look, not a verdict.
What does Invoice Auditor check beyond duplicate payments for AP teams?
It runs sixteen read-only checks in one pass and reports a 0-100 Books Integrity Score. Alongside duplicate payments it surfaces ghost or shell vendors, split-bill clusters shaped to dodge an approval threshold, silent unit-price creep, unused vendor credits sitting on the aging report, and recurring-charge drift across the year — each with the evidence behind it, all for your review.