Financial Operations Advisory
Sales tax,
expertly managed.
The MarshLine Group is a Financial Operations Advisory practice with Sales & Use Tax at its core. We guide companies through the shifting landscape of state and local tax — from first nexus footprint to a fully defended audit — and keep the books clean along the way.
The Practice
Every state writes its own rulebook — and rewrites it often. We translate that noise into a clean, defensible sales & use tax posture, so operators, founders, and finance teams can stop guessing and start growing.
What we do
Three disciplines. One practice.
Sales & Use Tax Advising
We will audit your existing AP Lifecycle for potential process gaps, provide Nexus reviews of current state and future growth implications, ensure your registrations are accurate and up to date and provide an Exemption Certificate Review. Built for teams growing across state lines without a dedicated indirect tax function or growing tax departments we want to help you identify potential tax implications before they become expensive. Expert guidance made personal.
- Current & Future Nexus Footprint Analysis
- Technology Integrations
- AP Lifecycle Reviews
- Historical Reviews
Audit Review & Defense
Sitting shoulder to shoulder with your team when a state comes knocking. From sample selection to negotiated settlement, we protect your record — and your cash.
- State Audit Representation
- Data Extraction & Sampling
- Assessment Negotiation
- Refund Claim Identification
Bookkeeping
Clean books are the foundation of every tax decision. We provide reliable, organized bookkeeping that keeps your financials current and your compliance exposure visible.
- Monthly Reconciliation
- Accounts Payable & Receivable
- Financial Statement Preparation
- Clean-Up & Catch-Up Work
Who we serve
Built for the full spectrum of growth.
Small Business
Owner-operators expanding beyond their home state for the first time — remote sales, marketplaces, and staffing arrangements.
Mid Market
Scaling companies balancing multi-state exposure with lean finance teams. Structured advisory without the Big Four overhead.
Enterprise
In-house tax and finance leaders looking for a specialist partner on projects, audits, and cross-border indirect tax questions.
CPA firms — let's partner
We work as a discreet, white-glove extension of your firm on the indirect tax questions your clients keep asking.
Self-check
Check Your Sales & Use Tax Readiness
Answer a few questions about your business, where you operate, and your current tax processes to identify potential sales and use tax compliance gaps.
- 01
Your business
- 02
Where you operate
- 03
Your current tax processes
The Founder
Deep industry experience — Fortune 500 insight. Boutique approach.
Krysta O'Shea Hernandez is an indirect tax specialist with experience spanning Fortune 500 consulting to in-house leadership of complex sales and use tax functions. She helps businesses navigate compliance, audits, and multistate tax challenges with practical, strategic guidance; bringing business-focused solutions to organizations of all sizes. The MarshLine Group’s mission is to make specialized indirect tax expertise accessible to companies seeking a true partner—one that provides hands-on guidance, strategic insight, and personalized service rather than a one-size-fits-all corporate experience.
100%
Focused on you
44
US states served
F500
INDIRECT TAX LEADERSHIP
1
Dedicated advisor
Let's talk
A personal conversation about your exposure.
Every engagement starts the same way — a candid discovery call, no invoice attached.