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Boring books, done right

Zero2One is a small, founder-led accounting firm for ecommerce brands on Shopify and Amazon. We keep your books reconciled every month and explain them in plain language — no jargon, no surprises at month-end.

Why Zero2One exists

Most ecommerce founders don't need a flashy "finance platform." They need their books done properly, on time, every month — by someone who understands how Shopify payouts, processor fees, refunds, and Amazon settlements actually flow.

That's what Zero2One does. We set your books up the way online sellers need them — A2X for Shopify and Amazon, a clean chart of accounts, and COGS tracked properly — then keep them reconciled and send you a short report you'll actually read.

We keep our client list small on purpose, so the work stays careful and you deal with the person actually doing it.

Who you're working with

Founder-led, hands-on, and qualified

Kate MacPherson, Founder of Zero2One

Kate MacPherson

Founder

Kate founded Zero2One after a decade running finance and operations for fast-growing companies — scaling teams, owning the numbers, and building the systems behind them. She brings that operator's perspective to ecommerce books, sets the standard the whole firm works to, and stays close to the work as it grows.
  • Co-founded HomeRoom and scaled operations from 2 employees to 50 in 18 months
  • Director of Operations at APM Help, scaling the team from 10 to 100+
  • Co-founded and sold OneFirm — a white-glove service for accounting firms specializing in compilations, with a bookkeeping arm
  • BBA, Accounting & Management · QuickBooks Online ProAdvisor (Level 2) · A2X certified

How we work

Simple principles, consistently applied

Reconciled every month

Your accounts are closed and reconciled monthly, with payouts, processor fees, and refunds handled the way ecommerce actually works — not forced into a generic small-business template.

Built for ecommerce

A2X for Shopify and Amazon, a clean chart of accounts, and COGS tracked properly — so your profit and margins are numbers you can trust and act on.

Plain language, direct contact

You get a short monthly report and a quick walkthrough. When you have a question, you deal directly with the people who keep your books — not a call center.

Month to month

No long contracts and no lock-in. If we're not the right fit, you can leave whenever, with no penalty.

Want a second set of eyes on your books?

Book a free 30-minute call. We'll look at where your books are today and tell you honestly whether we can help.

Book a free intro call