Founder-First Bookkeeping
We keep your books accurate, organized, and easy to understand, so you always know where your business stands and can make decisions with confidence.
Monthly Bookkeeping starting at $500/month. Best for businesses between $250k-5M/year.
Founder First Bookkeeping
They are structured to reflect how you actually run and understand your business while still meeting every IRS requirement.
We work with you to make sure your financials truly make sense, explaining what matters and answering your questions so you can fully understand and use your numbers.
Our service
Starting at $500/ month
Best for businesses between $250k-5M/year
Operations add-ons available: receipt management, payroll, contractor pay, and sales tax filing.
You run your business as usual. We handle the books in the background and send you clear reports every month. Here's how it works:
We link your bank accounts, cards and sales platforms, so transactions come to us automatically.
Every transaction is categorized and matched against your statements and payouts, like Shopify, Stripe and Amazon.
A Profit & Loss, Balance Sheet and Cash Flow every month: what you earned, what you own and owe, and where your cash went.
When I can't tell what a charge is, I ask in your secure portal. It takes a few minutes and keeps your books accurate.
I aim to respond within 48 business hours.
Whether it's a few months or a few years, we'll get you CPA-ready fast, with clean, organized books and zero judgment. Available for new Monthly Bookkeeping clients.
Who we work with
Whether you sell products or services, we set up your books around how your business actually runs. That means Shopify payouts and Amazon settlements that reconcile cleanly, and client payments, retainers and contractor costs that are easy to follow.
About the Firm
I'm Lotte Leussink, and I started Harmonic Accounting in 2016. I've always been surrounded by creatives and entrepreneurs, and I kept hearing the same frustration: they had questions about their numbers and no one they could really talk to. Harmonic is my answer to that. Clean books, and a real person who picks up, explains things plainly and knows your business.
Since then, I've supported over 100 businesses, from Shopify brands and Amazon sellers to consultants, agencies and creative studios. Every client gets the same thing: books that are accurate, organized and ready when you need them, with no jargon.
When you work with Harmonic, you work directly with me. I'm the person on your calls and the one answering your questions, and I know your business. Behind the scenes, I run on clear systems and checklists, so nothing slips through the cracks month to month.
01
Since 2016, we've delivered clean books, clear reports, and CPA-ready numbers. For founders who don't have time for financial guesswork.
02
Shopify, Amazon, Stripe, Kajabi... whatever runs your business, we track it properly and tie it all together. No gaps. No mess.
03
I respond quickly, explain clearly, and flag issues before they become problems. You always know where things stand.
From our clients
“I am immensely grateful for Lotte's knowledge and guidance. She is reliable, kind, resourceful, and open to answering any and all of my questions.”
Amanda Helen
amandahelen.com“I honestly can't recommend her services enough. Lotte is responsive, attentive to detail, and oh-so-efficient. She makes dealing with bookkeeping easy and fun.”
Lis Best
elisabethbest.com“Lotte makes me feel like I've got someone in my corner as well as someone I can rely on to answer any questions I have in a timely manner.”
Liz Andolong
lizandolong.comGetting started
A short form so we can both see whether we're a good fit before anyone books a call.
We talk through how your business works and what you want from your numbers.
You get a clear proposal, then we connect to QuickBooks Online and your accounts.
If you're behind, catch-up work happens here first.
Your first monthly report and call follow, and you always know who to ask.
FAQ
Yes, and they work best together. I keep your books accurate and up to date all year. Your CPA uses those books to file your taxes and give tax advice. Clean books mean a faster, cheaper tax season, and I'm happy to work directly with your CPA.
If you're spending hours on your books, putting them off, or not sure your numbers are right, it's time. Most of my clients come to me once their business hits a few hundred thousand in revenue and spreadsheets or DIY QuickBooks stop keeping up.
Definitely, it's more common than you'd think. I start with a catch-up project to get everything cleaned up and current, then move into monthly bookkeeping. Catch-up work is quoted separately based on how far behind you are.
Very little. Once your accounts are connected, I do the work in the background. Your part is answering a few quick questions in your client portal when I can't tell what a transaction is, usually a few minutes a month.
Monthly bookkeeping starts at $500/month. Price depends on things like transaction volume, the number of accounts and sales channels, and add-ons like payroll or sales tax. I'll give you a clear quote after our intro call, with no surprise fees.
Yes, I work in QuickBooks Online. If you're on something else, or QuickBooks Desktop, I can help you switch.
Yes. I connect to your accounts with read-only access, so I can see transactions but can't move money. Documents, reports and transaction questions live in a secure client portal, so sensitive files aren't sitting in email.
You apply, and if it looks like a fit, we hop on a short intro call. From there I send a proposal, we get your accounts connected, and we do an onboarding call. Most clients go from application to their first month of bookkeeping in 2 to 4 weeks. The biggest factor is how quickly I get access and documents from you.
No. Monthly bookkeeping is month-to-month with 30 days' notice. If it isn't working for you, or I don't think I'm the right fit, neither of us should be locked in.
Start with a short form. If we're a fit, you'll go straight to booking a call.
See If We're a Fit