Your client runs four businesses. You see all four in one place.
A client who owns a portfolio today hands you four sets of books, four logins, and a spreadsheet someone stitched together before your meeting — and you reconcile that spreadsheet before you can trust anything in it. One Nummio membership puts you in every entity that client owns: the same login, the same entity switcher they use, and the combined P&L and balance sheet with intercompany eliminations already run, not assembled by you at period-end.
What that looks like for you and for them
It's the same access, seen from two sides. For your client, inviting you once covers every entity in their portfolio instead of four separate accountant invitations to track. For you, that one membership is where you'd otherwise be piecing together a combined view yourself: the consolidated reports page renders every entity's P&L, balance sheet, and trial balance side by side with an eliminations column, computed the same way whether your client is looking at it or you are — nothing rebuilt for your visit, nothing to reconcile against a spreadsheet before the meeting starts. The portfolio migration demo runs the same combined P&L and eliminations live, on sample books, if you want to see the mechanism before a client's real one is in front of you.
External Accountant access is included on every plan, and combined or consolidated reporting comes with the Portfolio plan any multi-entity client is already on, so if you're in the portfolio at all, the combined view is already there waiting.
Your role, scoped on purpose
Nummio has a dedicated External Accountant role. It's deliberately narrower than an Owner or Bookkeeper seat — you get the instruments of your job and none of the liability of theirs:
| You can | You can't |
|---|---|
| Run and read every report — P&L, Balance Sheet, Trial Balance, General Ledger, agings. | Post ordinary day-to-day transactions or act on the review queue. |
| Post adjusting entries, including into locked periods. | Lock or unlock periods — that stays with the business. |
| Run tax export packages. | Manage the chart of accounts, users, bank connections, invoices, or billing. |
| Read the full audit log. | Submit, approve, or pay expenses and reimbursements. |
Your role means the same thing on every screen — there's no side door where a permission holds on one page and not another.
Two more things the role carries, because they are the instruments of the job. When a business closes a month, the period locks: nothing ordinary can post into it, enforced in the posting engine itself. Your adjusting entries are the one deliberate exception — they post with an explicit adjusting source, land inside the locked period, and every one is written to the audit log with your name and role on it.
The detail that tells you how the product thinks about your work: when an Owner or Bookkeeper posts an adjusting entry, they have to tick a confirmation box acknowledging it can land in a locked period. You don't — for the External Accountant role, the adjusting entry is the expected instrument, not the exception.
The audit log is append-only, one row per accounting-relevant change: who, what, when, and a field-level before-and-after diff. Filterable by actor, action, entity, and date range. The application's database role has no ability to update or delete a row — corrections to the ledger happen as reversing entries, and the log records those too.
The ledger itself is insert-only: a posted transaction is immutable at the database level, and the books your client shows you in Simple view are the same journal entries you can flip open in Ledger view — one dataset, two renderings, nothing reconstructed for presentation.
Working across clients — and within one client's portfolio
Two different kinds of "in one place," worth keeping separate. Within a single client's portfolio, one membership already puts every entity they own in your switcher, with combined reports run across all of them — that's the capability above, and it's shipped today.
Across different clients: one sign-in, one membership per client, and each client that invites you becomes a switchable business in your sidebar, enforced by the database's row-level tenant isolation, not just the UI. My clients, in that sidebar for anyone holding the role, ranks every client that's invited you by what needs attention, so you read one list instead of switching into each to check. It's a ranked list, not a firm workspace with its own billing — that's a conversation, not a plan tier.
Tax export packages
A zip of six CSVs per entity and tax year, built for handoff into your own workflow: a cover sheet, tax-line summary mapped to the filing type, general-ledger detail per tax line, trial balance, an unmapped-accounts list so nothing falls through silently, and a fixed-asset worksheet.
Filing types, and what the depreciation worksheet is and isn't
| Filing types | What the worksheet is — and isn't |
|---|---|
| Schedule C, 1120, 1120-S, and 1065. | The depreciation worksheet is raw general-ledger activity per fixed-asset account, for you to compute from directly. Nummio does not compute depreciation — that judgment stays yours. |
Exports run as jobs with a history and a download link, so a package you ran in March is still there in October. No e-filing — this is the package you work from, not a filing service.
Plan versus actual, and the month-end review
If a client runs a plan, the same instruments are open to you. On the first of the month, the month-end review lays out what moved on each line and asks a decision — hold the plan and note why, or adjust it — and either way the version the client started with is kept; nothing is edited in place. Plan versus actual sits in Reports alongside the P&L and Balance Sheet, so you're reading the client's real numbers against what the plan expected, not reconstructing that comparison yourself.
And if you hold the External Accountant role across several clients, My clients carries the same pace for each of them, so a plan line worth a decision surfaces there before you open the client.
What onboarding a client actually involves
One more honest note: today the invite goes out during that setup flow — a standalone team-settings page for inviting people afterward is coming but not built yet. If that wrinkle matters to a client you're onboarding, tell us and we'll get them sorted directly.
What it costs your firm
Nothing. There is no firm license, no per-client fee, and no partner program with a number attached. Each client pays for their own subscription — External Accountant access is included on every plan — and your seat on their books costs them nothing extra. See pricing for what your clients would pay.
The economics for your firm are time, not fees: capture and categorization happen in the client's review queue during the year, so the file you open at period-end is current, reconciled, and traceable — the cleanup hours are the thing this product is built to remove. Whether that holds for your clients is exactly the conversation we'd want to have.
See it before you recommend it
The demos on this site are the actual product components running against seeded books — not screenshots. The ones worth your time: the real reports rendered from a twelve-month fixture company, the month-end close from reconciliation through period lock, the review queue your clients would live in, and the migration with its reconciliation report.
Thinking about a client's file? Start with a conversation.
Write to hello@numm.io — a person reads it, and a messy file is the normal case, not a problem.