Bookkeeping built for
Boston businesses.
AI-powered, expert-reviewed bookkeeping for Boston businesses of every size — from solo founders and corner shops to multi-location restaurants, growing biotech startups, tech companies, and professional firms. Same dedicated team, same Portal, same monthly close.
From Cambridge labs
to the Seaport.
Boston runs on more than one industry, and at every size — from solo operators in the South End to multi-entity companies in Kendall Square. We've handled books for them all, including the Massachusetts-specific quirks the national firms miss.
Biotech & Life Sciences
R&D tax credit qualification, grant accounting, milestone-based revenue, equity comp tracking, multi-entity rollups. Built for Cambridge and Seaport-area startups.
Seed through clinical-stageTech & SaaS
Stock-based comp, ARR/MRR tracking, R&D credits, multi-state nexus, deferred revenue. Built for Kendall Square pre-seed through Series B startups.
Pre-seed to growth stageHealthcare & Medical
Provider payroll splits, insurance reconciliation, multi-entity practice rollups. From solo practitioners in Back Bay to medical groups affiliated with Longwood.
Solo to multi-providerReal Estate
Property-level books, syndications, K-1 distributions, depreciation schedules. From Beacon Hill brownstones to multi-property portfolios across Suffolk and Middlesex.
Multifamily · commercial · STRRestaurants & Hospitality
Daily sales reconciliation, food cost tracking, MA meals tax (6.25% + local options), tip pooling, multi-location rollups. From the North End to the Seaport.
Multi-location readyProfessional Services
Trust accounting, retainer recognition, partner draws — built for law firms, consultancies, and agencies across the Financial District, Back Bay, and Cambridge.
Law · consulting · agenciesLive in 14 days.
Reviewed every month.
No 90-day onboarding nightmare. No mystery process. Here's exactly what working with us actually looks like.
Discovery call
30 minutes. We review your current setup, walk you through the Yesler Portal, and quote a clear monthly engagement scoped to your business — before any work begins.
Onboarding
We connect to your bookkeeping software (or set you up fresh in QuickBooks/Xero), build your Portal, and your dedicated Massachusetts-savvy team learns your business. Live in 14 days.
Monthly close, 3-tier review
AI handles the first pass. Your dedicated specialist reviews and catches edge cases. Senior management or our in-house CPA signs off. You see every step in the Portal.
Everything Boston businesses need.
Pick one. Bundle them all. Most clients combine monthly bookkeeping with payroll, MA sales/meals tax, and annual corporate excise filings.
Monthly Bookkeeping
Categorization, reconciliation, clean reports — done in QuickBooks, Xero, FreshBooks, or Wave.
Payroll
W-2, 1099, multi-state for remote teams. MA PFML (employer + employee portions) handled.
MA Sales & Meals Tax
6.25% MA sales tax + meals tax (with local options) filed via MassTaxConnect. Multi-state if you ship out.
Tax Prep + MA Corporate Excise
Federal returns, K-1s, 1099s. MA corporate excise ($456 minimum + 8% net income + property/net worth) handled.
Tax Planning
Year-round strategy to reduce liability — entity structure, S-corp elections, retirement plans, R&D credits.
Catch-Up Bookkeeping
Six months behind? Twenty-four? We've seen worse. We'll get you current and audit-ready.
Massachusetts-aware bookkeeping.
Real humans on every account.
National firms treat you like a number. Small local shops disappear when their one bookkeeper takes vacation. We're built differently.
Massachusetts-specific expertise
We handle MA corporate excise tax (the $456 minimum + 8% on net income + property/net worth tax), navigate MA PFML compliance (employer and employee portions), file sales and meals tax through MassTaxConnect, and understand the R&D credit qualifications that biotech and tech founders care about.
Three layers of review on everything
AI handles the repetitive work. Your staff specialist checks it and handles edge cases. Senior management or our in-house CPA signs off before anything is finalized. No single point of failure, no "trust us" black box.
Multi-platform specialists
QuickBooks Online & Desktop, Xero, FreshBooks, Wave, Sage. We work where you already do — your books stay where your CPA, lender, and tax software expect them.
Eastern business hours
Your dedicated team is available during EST. Same-day responses on weekday messages. No outsourced call centers, no 3am email chains.
Right-sized for your business — and scales with you
Whether you're a one-person shop, an owner-operator with a small team, or a multi-entity company outgrowing your last firm, we scope every engagement to where you actually are. As you grow, your team stays the same — we scale alongside you instead of handing you off to a different tier.
Built to scale with your business.
Whether you're a solo founder finally getting your books in order or a multi-entity company outgrowing your last firm — we'll show you what life looks like with Yesler running your back office.
- Same dedicated team as you grow
- Free Portal walkthrough
- Month-to-month, cancel anytime
- Books stay in your software
We're a Cambridge-based biotech running through a Series A — we needed real bookkeeping that understood R&D credit qualifications and our partnerships with two academic institutions. Yesler cleaned up two years of self-managed books, and now our CFO actually trusts the numbers. Their three-tier review caught things our last firm missed entirely.
Questions Boston business owners ask.
Honest answers to what we hear before every demo.
Are you actually based in Boston?
Do you handle Massachusetts corporate excise tax?
We're a biotech / life sciences startup — can you handle R&D credits and grant accounting?
How do MA sales and meals taxes work?
We're already in QuickBooks Desktop — is that a problem?
I'm a solo founder / small business — am I the right fit?
How fast can you actually start?
Ready to get your Boston books in order?
Tell us about your business. We'll show you what life looks like with a Massachusetts-aware bookkeeping team running your back office — built for businesses of every size, from solo founders to multi-entity companies.