Taxes made clearer.
More time for what matters.
Tax preparation, bookkeeping and payroll for individuals and small businesses — handled entirely online, in English or Spanish.
Start with what’s actually on your plate
Most people arrive with one specific problem. Find yours below.
I’m filing as an individual
A W-2, maybe a side income, maybe a first return on your own. You want it filed correctly and every deduction you’re entitled to.
Individual returnsI’m self-employed or on 1099s
Contractor, rideshare, cleaning, IT, trades. Schedule C, quarterly estimates, and knowing which expenses actually count.
Self-employed & 1099I run a small business
An LLC, partnership or S corporation. Books that stay current, payroll that runs on time, and a return that reflects both.
Business servicesComplete individual and business tax services
Large enough to offer a full range of professional services — small enough to give you the individual attention you deserve.
Tax Preparation & Planning
Individual and small-business returns — 1040, Schedule C, 1120-S, 1065 and more. We look for every deduction you are entitled to, and plan ahead so next year is easier.
Learn moreBookkeeping & Write-Up
QuickBooks-based bookkeeping with monthly bank reconciliations, invoicing, and always-on access to your own financial information.
Learn morePayroll Services
Paychecks or direct deposit, withholding, federal and state deposits, Social Security and Medicare, plus W-2 and W-3 filing at year end.
Learn moreBusiness Entity Selection
LLC, S-Corp, partnership or sole proprietor — the choice carries real tax consequences. We explain each option and help you elect the right one.
Learn moreFinancial Statements & Analysis
Accurate, timely statements for lenders, partners and buyers — and the analysis behind them to support better decisions.
Learn moreBusiness & Advisory Consulting
Expanding, restructuring or selling? We bring the business acumen and analytical capability to help you make the right call.
Learn moreFour steps, entirely online
Thanks to today’s technology we serve clients in nearly every U.S. state — simply, securely and conveniently.
Free consultation
Tell us about your situation. We’ll confirm what you need and explain what the work involves.
Upload securely
We open your portal account. Send your documents from your computer or phone — no mail, no drop-off.
We prepare & review
We prepare your return or books, then walk you through the results and every deduction we found.
E-sign & e-file
Sign electronically in the portal. We e-file with the IRS and your state, and you keep permanent copies.
You deal with Jonatan, not a call centre
The person who takes your first call is the person who prepares your return.
More than seventeen years of accounting and tax experience, with an MBA in Accounting — working with everyone from independent contractors to established companies with more complex structures.
He founded JST Advisor, LLC in 2016 and has run it as a virtual firm since, serving clients in English and Spanish.
Read more about the firmThe knowledge and expertise in strategically planning for the tax year and financials separates them from other Advisory firms. JST Advisor has always been there to help.
Before you get started
Do I need to live near your office?
How do I send you my tax documents?
What does it cost?
Do I have to give you my Social Security number just to ask a question?
Which returns do you prepare?
¿Hablan español?
Can you take over my bookkeeping mid-year?
Let’s simplify your tax situation.
The first consultation is free, and starting one takes a name and one way to reach you.
Already a client? Sign in to your portal.