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Small business accounting services, closed by business day 10, guaranteed from your third month

You are juggling invoices, payroll and a dozen other jobs, and the books slip to whenever there is time. We pick up the whole task, with one named senior accountant on your file.

  • Books closed by business day 10, guaranteed from your third month
  • A written scope and quote within 2 days

Illustrative screen. Books closed by business day 10, guaranteed from your third month.

What our small business accounting services include

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 aging you can trust.

Reconciliations

Banks, cards and payment processors tied out every month.

Month-end close

Accruals, prepaids, revenue and cut-off reviewed before the books close for the month.

Management reporting

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

Audit support

Clean schedules for your tax preparer and your auditors.

How we take over your small business accounting

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

  1. Week 1Onboard

    Access granted, a read-only look at your books, and your close calendar set.

  2. Month 1Catch up

    We clear the backlog and tie every balance to a source document.

  3. From month 3Close by day 10

    Books closed by business day 10, guaranteed from your third month. A senior accountant checks and signs every number.

  4. Every monthExplain

    A management pack you can read, plus a call on what changed and why.

What a close looks like

Four checks stand between your transactions and the numbers you see, every single month.

Month-end close
  1. Bank and cardsEvery account matched to its statement.
  2. Receivables and payablesTied to the ledger, aging reviewed line by line.
  3. Accruals and cut-offSubledgers agree to the general ledger before anything is reported.
  4. Pack explainedA management pack and a call, so you hear what changed and why.

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.
~$23Kin checks that never arrived, traced to a wrong mailing address. 19 checks reissued with zero disputes.

Real engagements, anonymized. Figures are rounded.

Hundred brought significant accuracy and stability to our internal accounting processes, and I trust them very much.
Aaron Mirsky, PhDAaron 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 MehrabianTigran MehrabianCFO, AllGuard
7 rowsWhat our own bank import droppedOur own AI-run bank import silently dropped 7 rows, worth ~$93K. 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 KhachatryanSenior Accountant, AR/AP
Kajayr Matevosyan, Senior Accountant
Kajayr MatevosyanSenior Accountant

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

Small business accounting services: questions, answered honestly.

Related: Books cleanupNetSuite accountingFractional CFO servicesQuickBooks migration

1What 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.

2What is the best accounting software for a small business?

We work in NetSuite, QuickBooks Online and Sage. We only suggest a change if it would genuinely pay for itself.

3What should a small business expect from outsourced accounting?

One named senior accountant on your file. A close that lands on a set date. A pack that answers your questions before you ask them.

4Can I keep my own bookkeeper and still use your service?

Plenty of owners keep a bookkeeper or controller in house while we run the close. We take hours off your plate, not people off your team, and a senior accountant owns the judgment calls.

5What do I actually get each month?

A close that lands on a set date and a management pack you can read. A named senior accountant signs off every number before it ships.

6How soon will my books close on a fixed date?

Books closed by business day 10, guaranteed from your third month. Catch-up and cleanup come first, and most clients get there sooner.