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Satisfied Clients Served
Trusted. Experienced. Results-Driven.
Reliable Accounting,
Tax & Advisory Services
NAS Advisors provides practical financial solutions to individuals, small businesses, nonprofit organizations, and international organizations across Virginia and the Washington, D.C. area.
QuickBooksAccounting System Support
Federal TaxIRS Filing Support
State TaxVirginia Tax Support
PayrollAdministration & Reporting
AdvisoryBusiness Financial Guidance
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Individuals
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Small Businesses
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Nonprofits Supported
On-Time Service
Accurate work delivered on schedule, so you can focus on what matters.
A Team of Professionals
Experienced specialists working together to support your goals.
Analyze Your Business
Practical insights that help you make stronger financial decisions.
Confidential & Secure
Your financial information is handled with care and professionalism.
Our Services
Comprehensive Financial Solutions
Practical, year-round support designed to keep your finances accurate, organized, compliant, and ready for growth.
Tax Services
Individual, business, and nonprofit tax preparation, federal and state filings, planning, and year-round guidance.
Discuss your tax needs →Accounting & Bookkeeping
In-house or outsourced bookkeeping, account reconciliation, financial reporting, and dependable recordkeeping.
Strengthen your records →Accounting System Setup
QuickBooks setup, chart-of-accounts design, cleanup, migration, workflow improvement, and user support.
Improve your systems →Payroll Services
Reliable payroll processing, payroll tax support, reporting, and practical administration for growing teams.
Simplify payroll →Business Advisory
Budgeting, forecasting, financial analysis, process guidance, and practical support for informed decisions.
Plan for growth →Business Registration
Virginia entity registration, county registration, EIN assistance, renewals, and startup guidance.
Start your business →
15+
Years of Professional Experience
About Us
About NAS Advisors LLC
NAS Advisors LLC is a Virginia-based consulting firm providing accounting, bookkeeping, tax, payroll, accounting system setup, business registration, and business advisory services. We serve individuals, small businesses, nonprofit organizations, and international organizations.
Purpose
To deliver reliable financial solutions that simplify operations and support confident decisions.
Vision
To be a trusted financial partner known for dependable service and long-term relationships.
Mission
To provide accurate, compliant, and practical services with integrity, care, and professionalism.
Who We Serve
Solutions Built Around Your Needs
Individuals
Personalized tax preparation, planning, and financial support for your unique circumstances.
Small Businesses
Scalable accounting, payroll, tax, and advisory support to improve efficiency and strengthen growth.
Nonprofit Organizations
Accounting, reporting, tax-exempt filing, and compliance support for mission-driven organizations.
International Organizations
Practical support for organizations managing cross-border financial and operational requirements.
Why Clients Trust Us
A Reliable Partner for Every Stage
We combine technical experience with personalized attention so clients receive practical, responsive support—not generic advice.
- More than 15 years of accounting and tax experience
- Year-round support beyond tax season
- Solutions tailored to individuals, businesses, and nonprofits
- Clear communication and timely follow-through
- Professional handling of sensitive financial information
★★★★★
“NAS Advisors has been instrumental in strengthening our accounting processes and helping us make better financial decisions.”
Small Business ClientVirginia
★★★★★
“Their team is professional, responsive, and attentive. We value the clarity they bring to our financial operations.”
Nonprofit ClientWashington, D.C. Area
★★★★★
“Reliable service, clear communication, and practical guidance. NAS Advisors is a trusted partner for our organization.”
Organizational ClientNorthern Virginia
Helpful Resources
Official Tax Information
Access trusted federal and Virginia tax resources for current forms, filing information, and taxpayer guidance.
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Let’s Build a Stronger Financial Future—Together
Partner with NAS Advisors for clarity, compliance, confidence, and sustainable growth.