Architecture Bookkeeping

Bookkeeping for Architects: What a Studio Bookkeeper Should Actually Handle

Published September 18, 2026 by Invisible LLC Team · 9 min read

If your Sunday nights involve phase invoices, a stack of reimbursable receipts, and a QuickBooks file you'd rather not open, you already know the problem isn't a shortage of work. It's that you're the rainmaker, the designer, and the bookkeeper, and one of those jobs is getting done badly.

You're a principal, not an accountant. The fix usually isn't learning accounting. It's handing the books to someone who understands how an architecture practice actually makes money: in phases, against fees, with reimbursables, consultants, and additional services layered on top. That's a narrower skill than general bookkeeping. It's also why so many studios hire a bookkeeper, feel no better, and decide the problem must be them.

The takeaways. Good bookkeeping for architects covers far more than reconciling the bank. It means getting phase invoices out on schedule, capturing every reimbursable, coding time and costs to projects, running payroll for W-2 staff and 1099 collaborators, and closing each month with a project-level report you can act on. A bookkeeper who only does the reconciling is doing a fraction of the job. Below is the full list, how it differs from what a CPA or controller does, and the questions that separate a studio bookkeeper from a generic one. If you'd rather see how we handle it for practices like yours, start with our architecture and design practice page.

What a studio bookkeeper should handle every month

Here's the monthly scope for a five-to-twenty-person architecture or design practice. Some studios split it between an office manager and an outside bookkeeper. Either way, every line needs an owner, and that owner shouldn't be you.

1. Phase invoicing and payment tracking. Invoices go out on a fixed day, billed against phase fees (percent complete within long phases, not only at phase end), with reimbursables and additional services itemized. Then someone tracks what's been paid and follows up on what hasn't. For most studios this is the most valuable item on the list, because it's the one that turns finished work into cash. Our AIA billing guide covers the G702/G703 mechanics if your clients require them.

2. Reimbursables, captured when they happen. Printing, models, travel, consultant pass-throughs. The receipt gets matched to a project when the expense hits the card, not three months later. Your markup is applied the way your agreement defines it, and the expense lands on the next invoice. Reimbursables are a small share of fee and an outsized share of leaked margin.

3. Bank, card, and payment reconciliation. Every account tied out to its statement every month, including the card that three people use. This is the part generic bookkeepers do well. It's necessary, and it isn't enough.

4. Job costing. Revenue and direct costs (staff time, consultants, reimbursables) coded to the project they belong to, so you can see profit by project and not just for the firm. That depends on time entry being current, which a good bookkeeper will nag about politely and persistently. We walked through the setup in job costing in QuickBooks for studios.

5. Payroll for a mixed team. W-2 staff on a regular cycle, plus 1099 collaborators and consultants paid on their own terms. For payments made after December 31, 2025, the federal Form 1099-NEC reporting threshold is $2,000 per recipient for the year, up from $600, and it's indexed for inflation after 2026 (IRS). That means fewer forms but the same discipline: a W-9 on file before the first payment, and year-end totals that reconcile. More detail in our 1099-NEC threshold post.

6. Retainers and deposits handled correctly. A retainer isn't income when it arrives. It's money held for the client until the work is done, and it sits in a liability account until it's applied. Book it as revenue on arrival and your statements will swing wildly between the month you sign and the month you finish.

7. A monthly close you can read. By a set day each month, a P&L and balance sheet built on a chart of accounts designed for a studio, not for a tax return. Plus a short project-level report showing billed, unbilled, and collected by project. If your bookkeeper delivers statements but nothing by project, you're getting the tax-return view of your practice, not the management view.

8. A clean handoff to your CPA. At year end the books are closed, reconciled, and documented, so tax prep is a review instead of a rescue.

What generic bookkeepers usually miss

None of this is exotic. It's just specific to how design practices work. A bookkeeper whose other clients are retail shops and dental offices will reliably miss the same things:

Phase billing. They invoice when told to, instead of on a schedule tied to phase fees and percent complete. Unbilled work quietly piles up. We covered why that matters in work in progress for studios.
Reimbursables as income. Pass-throughs get recorded as revenue with no matching cost, or as costs that never get billed. Both distort project margin.
Consultant costs in overhead. The structural engineer's invoice lands in a generic "contractors" account instead of on the project, so the project looks more profitable than it was.
Retainers as revenue. Covered above, and extremely common.
Time never tied to projects. Without time by project there's no job costing, only a firm-wide P&L. That's the gap between project margin and firm margin, and the difference between knowing which clients make you money and guessing.

Bookkeeper vs. CPA vs. controller: who does what

Principals often hire the wrong role because the titles blur together. Here's the clean split:

Role	What they own	How often	The question they answer
Bookkeeper	Invoicing, payment tracking, reconciliation, coding, payroll processing, the monthly close	Weekly and monthly	"Are the books current and correct?"
Controller	Reviewing the bookkeeper's work, designing reports (project margin, WIP, utilization), cash forecasting, processes and controls	Monthly and quarterly	"What are the numbers telling us, and can we trust them?"
CPA	Tax returns, tax planning, entity questions, and attest work if a lender or client requires it	Annually, plus planning	"What do we owe, and how do we legally owe less?"

Most studios under about ten people need a strong bookkeeper and a good CPA. The controller layer starts to earn its keep once you're making hiring decisions off project margin, carrying a line of credit, or running enough projects at once that nobody can hold the whole picture in their head. Our explainer on what a fractional controller does covers the signals. Our fractional controller service is how studios get that layer without a full-time hire.

The common mistake runs both ways. Studios pay CPA rates in March for bookkeeping work, cleaning up a year of miscoded transactions. Or they expect a bookkeeper to produce controller-level analysis nobody ever asked them to build.

Five questions to ask before you hire a bookkeeper

You don't need to evaluate their technical accounting. You need to find out whether they understand how a practice bills. Ask:

"How would you invoice a CD phase that runs four months?" You want to hear monthly percent-complete billing against the phase fee. "Whenever you tell me to" is the wrong answer.
"Where do reimbursables go when they hit the card, and how do they get onto an invoice?" You want a process, with the words "project" and "markup" in it.
"How do you handle a retainer?" You want "a liability until it's applied." If they say income, keep interviewing.
"What would my monthly report include beyond the P&L?" You want something by project: billed, unbilled, collected.
"Do you work with other architecture or design firms?" Industry fluency isn't everything, but it means you won't pay for their education.

If you already work with someone and those questions make you uneasy, our guide to when to fire your accountant covers the warning signs. How to switch accountants without losing momentum covers the handoff.

In-house, freelancer, or firm

There's no universally right answer, just trade-offs:

An in-house bookkeeper or office manager is close to the work and knows the team. But it's a salary slot, the role is hard to cover during vacations, and design-industry accounting skill is hard to hire at studio scale.
A freelance bookkeeper can be excellent and flexible. You're relying on one person, though, and reviewing their work usually falls back on you or your CPA.
An outsourced firm gives you continuity and a second set of eyes on the work, and can add the controller layer when you need it. The trade-off is that you want one named person who knows your projects, not a rotating queue. Ask about that directly.

Whichever you choose, the software matters less than the process. If you're weighing platforms anyway, our comparison of accounting software for architecture firms covers when QuickBooks is enough and when an A&E-native tool is worth the cost.

The short version, again

A studio bookkeeper's job isn't just to keep the books tidy. It's to make sure every hour of design work turns into an invoice, every invoice turns into cash, and every month ends with a report that tells you which projects are working. If yours is only reconciling the bank, you're paying for a fraction of the job and doing the rest yourself.

We do bookkeeping for architecture and design practices: phase invoicing, reimbursables, job costing, payroll for W-2 staff and 1099 collaborators, and a monthly close with project-level reporting. It's run by an actual person who knows the difference between a B101 milestone and a reimbursable pass-through. Start with our bookkeeping service and our invoicing and payment tracking, see how we work with architecture practices, or request a quote and we'll look at your current setup together. One conversation, and you'll get an honest read on what's missing.