Home / Bookkeeping and monthly close

Outsourced bookkeeping and a month-end close by business day 10.

A whole senior team runs your books: accountants, NetSuite specialists and a CFO when you need one. AI does the matching and reconciling. A senior accountant checks and signs every number.

Book a discovery call See how it works

Day 10 close, guaranteed from month 3
Every number checked and signed
NetSuite, QuickBooks Online and Sage

Illustrative screen. The day 10 close is a real guarantee, from month three.

Two ways outsourced bookkeeping clients start with us.

Both end in the same place: books you can rely on, every month.

Your books are current, but they eat your time.

A bookkeeper who is stretched, a close that lands in week three, and you checking the numbers yourself. We take the whole thing over.

We follow your calendar from the first month
A named senior accountant who knows your books
A management pack you can read, with a call to explain it

See how a takeover works

Your books are behind, or you do not trust them.

Then we start with a cleanup. We rebuild the books period by period, reconcile every balance, and only then move you onto a monthly close.

One client came to us a full year behind
Every balance reconciled to a source document
They now close every month

Books cleanup and catch-up

What our outsourced bookkeeping and accounting includes.

Everything between a transaction and a number you can sign off.

Bookkeeping

Transactions, bills and invoices coded and kept current.

Payables and receivables

Bills paid on time, invoices chased, and ageing you can trust.

Reconciliations

Banks, cards and payment processors tied out every month.

Month-end close

Accruals, prepaids, revenue and cut-off, closed by business day 10.

Management reporting

A pack you can read, with what changed and why.

Year-end and audit support

Clean schedules for your tax preparer and your auditors.

How we take over your bookkeeping and month-end close.

Four steps, and your books never stop while we do them.

Week 1Onboard
Access, a read-only review of your books, and your close calendar agreed.
Month 1Catch up
We clear any backlog and reconcile every balance to a source document.
From month 3Close by day 10
Guaranteed. Most clients get there sooner.
Every monthExplain
A management pack and a call. You hear what changed and why.

Your month-end close checklist, every month.

Four checks stand between your transactions and the numbers you see. AI does the matching. A senior accountant signs.

Month-end close

Bank and cards reconciledEvery account matched to its statement.
Receivables and payables tied to the ledgerSubledgers agree to the general ledger before anything is reported.
Accruals and cut-off reviewedJudgment calls are made by a senior accountant, not a script.
Pack explainedYou get the numbers and the story behind them.

Bookkeeping results from our own engagements.

26 of 43companies we have served are still our clients today.

106 of 106invoices matched to the penny against a customer's own records, proving billing was never the problem.

~$93Kmissing from a bank import that silently dropped 7 rows. Our process caught it, and the check became a written rule.

Real engagements, anonymised. Figures are rounded.

Hundred brought significant accuracy and stability to our internal accounting processes, and I trust them very much.

Aaron Mirsky, PhDCFO, ONE Insurance Services

Hundred MS elevated our month-end close game by implementing AI into all our financial operations, super seamlessly. I was skeptical in the beginning. Now we have a faster close, cleaner books and schedules. Super happy about that.

Tigran MehrabianCFO, AllGuard

~$93KThe ~$93K our own bank import droppedOur own AI-run bank import silently dropped 7 rows. The process caught it, and it became a written rule.Read the case study →

The accountants who will run your books.

A named senior accountant who knows your books, backed by a whole team. The same people every month.

Every person is on our payroll, reachable, and accountable for the numbers they touch. When your accountant does not change every year, nobody has to relearn your business.

Meet the whole team

Arpine Khachatryan, Senior Accountant, AR & AP — **Arpine Khachatryan**Senior Accountant, AR & AP

Kajayr Matevosyan, Senior Accountant — **Kajayr Matevosyan**Senior Accountant

Free accounting and NetSuite guides from our team.

Practical how-tos. No sign-up, no sales pitch.

All blog posts →

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Bring us one number you don’t trust.

A 30-minute discovery call. No slides, no pitch. We look at one real problem in your books and tell you honestly whether we can fix it, and what it would cost.

1
Pick a slotOne question on the form: your accounting system. Add a note about the number if you like.
2
30 minutes with the founderWe look at the problem live, in your numbers.
3
A written scope and quote within 2 daysTake it or leave it. Either way you understand your problem better.

You’ll talk to Narek AbgaryanCo-Founder & CEO · CFA, FRM

If we don’t think we can help, we say so on the call and point you somewhere better. We only take on work we can tie to the penny.

Not ready for a call? Email me the number instead.

narek.abgaryan@hundredms.com 727 625 4373 Hundred MS LLC · 7901 4th Street North, Ste 300, St. Petersburg, FL 33702 · we reply within one business day.

Book your discovery callFree · 30 min · no obligation

Illustration of a magnifying glass over a ledger with one line highlighted

Pick a time that suits you

30 minutes
Free, no obligation
With the founder

See available times

or call 727 625 4373

Nothing is sold on the call.Open the calendar in a new tab →

Outsourced bookkeeping services: questions, answered honestly.

1What do your outsourced bookkeeping services include?

Bookkeeping, payables and receivables, bank and processor reconciliations, the month-end close, management reporting, and year-end and audit support, in the accounting system you already use.

2How fast do you close the books?

Within 10 business days of month-end. We guarantee it from your third month with us, and most clients get there sooner.

3Which accounting systems do you work in?

NetSuite, QuickBooks Online and Sage. We work in the system you already have, and we only suggest a change if it would genuinely pay for itself.

4Do you replace my bookkeeper or my team?

We replace hours, not people. The mechanical work goes to the AI. Judgment, policy and accountability stay with people. Many clients keep a bookkeeper or controller in-house while we run the close.

5Who is accountable for the numbers?

A person, always. Every entry is reviewed and posted by a senior accountant, and every report goes out under our name. You know exactly who to call.

6What does it cost?

The price depends on your systems and volume. You can work with us on a project, monthly or hourly, and the discovery call ends with a written scope and quote within two days.