CPA and accounting firms
Add tax preparation and compliance capacity during recurring or seasonal workload peaks.
US Tax Compliance
Tax season, without the overtime.
A dedicated GSC team prepares your business and individual returns, multi-state filings and sales tax work and a senior reviewer checks every one before it reaches you. Your team spends filing season on review and clients, not data entry.
Definition
What is US Tax Compliance?
US tax compliance means preparing and filing the federal, state and local returns a business or individual is required to file, accurately and on time.
Read moreShow less
Tax deadlines can create a sharp increase in workload, while the underlying work depends on accurate information, organized documentation and consistent processes.
Where GSC fits
GSC prepares the returns and the workpapers behind them for businesses, individuals and the accounting firms that serve them.
Who It’s For
Built for teams that need more tax capacity.
GSC adds preparation capacity so your team spends less time on data entry and more time on review, planning and clients.
Businesses
Hand off recurring tax preparation without building an in-house tax team.
Growing finance teams
Keep up as new states, entities and filing requirements pile on.
Busy-season teams
Scale support when tax workload increases without making every seasonal increase a permanent hiring decision.
What GSC Supports
What we prepare for you.
Every return and filing below goes through the same four steps: gather, prepare, review and complete.
What you getIncluded in US Tax Compliance5 services · one dedicated team
- Business Tax Returns
- Federal and state income tax returns for corporations, S corporations and partnerships, prepared from your books with workpapers to back them up.
- Individual Tax
- Individual returns for business owners, partners and your firm’s clients, including K-1 income and the schedules that come with it.
- Multi-State
- State returns and apportionment for businesses and individuals filing in more than one state, tracked state by state.
- Sales & Use Tax
- Sales and use tax returns prepared on each state’s filing calendar, with taxable sales reconciled to your books.
- Year-Round Support
- Extensions, tax notices and the bookkeeping clean-up that makes next season easier.
01
02
03
04
05
Scope is agreed with you up front. Start with one service and add more whenever you need them.
How We Work
Four steps, every return.
01
Gather
We send one organized request list and follow up on what's missing, so nothing stalls on documents.
02
Prepare
Your dedicated preparer builds the return and workpapers in your tax software.
03
Review
A senior reviewer checks every return against the workpapers before you see it.
04
Complete
Once you approve, we help with filing, extensions and any follow-up.
Technology accelerates the workflow. People remain accountable for the outcome.
Why GSC
Why choose GSC for tax compliance support?
Built for the January-to-April crunch.
01
A dedicated team
You work with the same people who know your tax workflow, not an anonymous, rotating queue. You always know who is working on what and who is accountable for it.
02
AI-assisted, person-reviewed
Automation helps with the repeatable parts of the work, such as processing and organizing tax information. A person reviews every output before it reaches you.
03
Your systems, your processes
GSC works inside the systems, checklists and review steps your team already uses. There’s no requirement to migrate systems to work with us.
04
Scalable capacity
Support scales up for filing season and other busy periods and back down when the workload eases, without a new hiring cycle on your side.
Systems
Systems we work with
GSC’s team works directly inside your accounting and tax software. You don’t need to migrate systems to work with us.
Tax software
Drake SoftwareDrake TaxWolters Kluwer CCHAxcess Tax · ProSystem fx · ATXThomson ReutersUltraTax CSIntuitLacerte · ProSeries · ProConnect Tax
Accounting & ERP
QuickBooksXeroSageNetSuite
Running something else? Tell us on a call. The team works in the tools you already use. How GSC uses technology →
Product names and logos belong to their owners. GSC is not affiliated with these companies.
Engagement Models
Two ways to work with GSC.
Tax compliance support can be delivered in two ways. The right one depends on who you want directing the day-to-day work.
Model 01
Outsourcing
GSC manages agreed tax compliance workflows as an outsourced service, working against agreed deliverables.
Fits whenyou want to hand off a defined tax workflow and have GSC run it through gather, prepare, review and complete.
Explore Outsourcing →
Model 02
Offshore Staffing
GSC provides dedicated tax professionals who become part of your team and take day-to-day direction from you.
Fits whenyou want added tax preparation capacity that your own team directs.
Explore Offshore Staffing →
When to Consider It
Signs you need more tax capacity
- 01Tax season consistently stretches your team.
- 02Preparation work is consuming senior staff time.
- 03Multi-state requirements are increasing.
- 04Tax documentation is difficult to organize.
- 05Workload changes significantly during the year.
- 06Your accounting or tax team needs additional delivery capacity.
Recognize a few of these?
Comparison
Outsourced tax compliance support vs. in-house tax team
Both models can work well. This is how they differ in practice.
Outsourced tax compliance supportIn-house tax team
Hiring
The provider recruits, trains and assigns the team. You agree scope rather than run a search.
You source, interview, hire and onboard each person directly, on your own timeline.
Capacity
Adjusted by changing the agreed scope or team size as tax workload moves through the year.
Tied to current headcount; seasonal peaks are absorbed by the existing team or met with new hires.
Management
Day-to-day supervision and review sit with the provider against agreed deliverables; you keep oversight.
Your own managers direct, review and develop the team.
Flexibility
Scope can expand or narrow as tax requirements change, within the terms of the engagement.
Changes in tax requirements are handled by the existing team or through hiring and restructuring.
Cost
Pay for the returns and scope you need.
Year-round salaries for capacity you mostly need for four months.
Some teams combine the two: in-house staff who own tax decisions and client relationships, with outsourced support handling agreed preparation work underneath.
Industries
Industries we support
Different businesses organize their tax information differently. The team adapts to your workflow, your documentation and your review steps.
- Professional ServicesFirms where tax deadlines land on top of client work.↗
- Technology & SaaSGrowing companies whose tax workflows widen as they expand.↗
- Real EstateMulti-entity structures that need organized information for each workflow.↗
- Financial ServicesControlled environments and documentation-first workflows.↗
- HealthcareBusy organizations that need tax information organized before deadlines arrive.↗
- NonprofitOrganizations with their own recurring reporting and filing requirements.↗
- Other Growing BusinessesIf tax work is piling up faster than you can hire, we should talk.↗
FAQ
Frequently asked questions
Straight answers to what people ask us before they hand over the work.
01What is US tax compliance?+
US tax compliance means preparing and filing the federal, state and local returns a business or individual is required to file, accurately and on time.
02What does tax compliance support include?+
GSC's tax compliance support covers five areas: business tax returns, individual tax, multi-state, sales & use tax and year-round support. The scope is agreed for each engagement and runs through the same workflow: gather, prepare, review and complete.
03Does GSC support business tax returns?+
Yes. GSC prepares federal and state business returns from your books, with workpapers your reviewer can check.
04Does GSC support individual tax?+
Yes. GSC prepares individual returns, including those for business owners with K-1 income or filings in more than one state.
05Can GSC support multi-state tax workflows?+
Yes. GSC supports tax workflows for businesses or individuals with multi-state requirements, keeping the information and preparation work for each applicable state organized.
06Does GSC support sales and use tax?+
Yes. GSC prepares sales and use tax returns on each state's schedule and reconciles taxable sales to your books.
07Can GSC provide support during tax season?+
Yes. GSC adds structured preparation and compliance capacity during seasonal workload peaks, so your team doesn't have to absorb every deadline-driven increase internally.
08Can tax compliance support continue year-round?+
Yes. Tax work doesn't only happen during filing season. Depending on the engagement, GSC can support recurring tax-related workflows throughout the year.
09Can GSC work within our existing tax or accounting workflow?+
Yes. GSC works inside the systems and processes your team already uses, including QuickBooks, Xero, NetSuite or Sage and follows the review steps agreed for the engagement. You don't need to migrate systems to work with us.
10What is the difference between tax compliance and tax advisory?+
Tax compliance is the work of meeting applicable filing and reporting requirements: organizing information, preparing the required forms and reviewing them before completion. Tax advisory is strategic tax planning and advice on how to structure decisions. This page covers tax compliance support. GSC supports the preparation and compliance workflows; tax planning and advice decisions stay with you and your tax advisor.
Next Step
Need more capacity during tax season or all year?
Tell us which returns are piling up and when they’re due. We’ll tell you what we can take on this season and how fast we can start.