Bookkeepers who think like auditors.
We kept seeing the same thing: talented, driven business owners running completely blind. They'd say “I have a CPA” or “my spouse handles the books” — but the real question never got answered: do you actually know what your numbers say? The “I'll deal with it later” approach is one of the most expensive decisions a business owner can make — substantial omissions can extend an IRS audit window to six years. That's where GTB comes in. We bring Fortune 500 financial rigor to small businesses in Vancouver, WA, Portland, OR, and nationwide — so your books are accurate, defensible, and driving profit instead of collecting dust.
See how we work
The expertise behind every set of books we touch
75+ years of combined bookkeeping and tax experience — applied to your business. GTB isn't a solo operator with a spreadsheet; every engagement is backed by people who've spent careers inside the financial complexity that breaks most small businesses.
Senior Tax Accountant oversight
On every client account — not just at year-end, but throughout the month.
QuickBooks ProAdvisor certified
Expert-level platform knowledge — not just basic familiarity.
75+ years combined experience
Across medical practices, service businesses, construction, and more.
$2,000,000 E&O insurance
Because professionals stand behind their work.
Executive oversight
Every deliverable reviewed, every month, before it reaches you.
HIPAA-aware workflows
For medical offices that require confidentiality alongside accuracy.
We don't just track your numbers. We protect them.
The Audit-Ready Clarity System
Most bookkeepers show up at year-end, sort through a year's worth of chaos, and hand you a report you barely understand. That's not what we do. This is our proprietary weekly process, built for medical offices and service-based businesses.
We reconcile your books every week, so problems don't compound. By the time month-end arrives, your close is already clean and on schedule.
We reconcile every week so problems don't compound.
Your Chart of Accounts is built around how your business actually makes money.
We flag profit leaks before they become losses, and prep for audits before one is ever triggered.
Reviewed with tax outcomes in mind every month — no surprises come filing season.
The result: clean, compliant, audit-ready financials your CPA, your bank, and the IRS can walk into at any time.
We specialize. We don't try to serve everyone.
GTB works best when we're working deep — inside the financial structures of two specific types of businesses. Our systems, workflows, and expertise are built around your reality, not adapted from something generic.
Medical offices
Insurance remittances, EOB reconciliation, provider compensation, and HIPAA-adjacent data handling. We track every explanation of benefits from insurer → bank → books, so nothing falls through the cracks.
Service-based businesses
Revenue from multiple streams, payroll, job costing, and cash flow that create compounding complexity. We keep up — with weekly reconciliations and financial visibility that lets you scale with confidence.
“If you trade your time, expertise, or services for revenue — you'll get results with GTB.”
Six written guarantees. Zero tolerance for inaccuracy.
Trust isn't claimed. It's earned through consistent, accurate, on-time work — month after month, client after client.
Accuracy Guarantee
We correct any errors we make at no extra charge, with full documentation.
Timely Close Guarantee
Miss an agreed month-end close date and you get a service credit on your next invoice.
Price Lock Guarantee
Flat-rate pricing, no surprise hours. Your fee won't rise without 30 days' notice.
Audit-Ready Guarantee
Audit-ready books every month. If an issue surfaces during an audit, we fix it and supply the workpapers.
Security & Privacy Guarantee
Bank-level encryption, least-privilege access, and MFA on all portals — always.
Satisfaction Promise
Not satisfied in the first 30 days? We'll make it right, or refund your setup fee.
“Professional and friendly customer service and extreme attention to detail. They cleaned up years of inefficiency and made the whole process pain free.”
“Brian doesn't just reconcile — he finds money we were losing.”
“Working with Giesler-Tran Bookkeeping made running my business enjoyable again.”
“Reliable, accurate, and easy to work with. I can finally focus on growing my business.”