

Melissa
Smallwood
MAcc | PhD Statistics
Quickbooks Online & Desktop Pro Advisor
11 Years in Business
Better Business Bureau Accreditation
Navigating Complexity with Expertise and Precision for Every Business
If you’re running a business and constantly wondering whether your books are accurate, your payroll is being handled correctly, or you’re truly prepared for tax time, you’re not alone.
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In today’s economy, guessing gets expensive.
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Hi I'm Melissa Smallwood. Founder and President of SIM Financial Services. We help individuals, entrepreneurs and growing businesses gain clarity around their finances so they can make better decisions, stay compliant and build stronger, more sustainable businesses.
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Through SIM Financial Services, I provide practical financial guidance and reliable execution in areas including:
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Accounting & bookkeeping
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Payroll and payroll compliance
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Tax preparation and planning
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QuickBooks support and training
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Business formation and operational guidance
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Financial education for business owners
​My approach is different from simply “doing the books.” I believe business owners should understand what their numbers are telling them.
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That means helping clients answer questions like:
Am I actually profitable?
Can I afford to hire?
Am I setting enough aside for taxes?
Are my books clean enough to make good decisions?
Is my business structured and operating the way it should be?
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My accounting career began in the construction industry, where I progressed from Accounting Assistant to Project Accountant and later Controller, managing corporate accounting functions and gaining firsthand experience with the financial systems businesses rely on every day.
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I earned my Bachelor’s Degree in Management with a minor in Accounting from Ottawa University and later a Masters in Accounting and PhD in Statistics from Florida International University. .
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After nearly a decade in corporate accounting, I transitioned into the nonprofit sector as Director of Community Partnerships for Rebuilding Together Broward County. That experience strengthened something that remains central to how I work today: financial expertise matters, but so do relationships, communication and understanding the people behind the numbers.
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Today, I bring those experiences together through SIM Financial Services.
We work with clients who may have outgrown DIY bookkeeping, need a more reliable accounting partner, are preparing for growth, or simply want someone who can help make the financial side of running a business feel less overwhelming.
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You don’t need more financial jargon. You need accurate numbers, practical guidance and a partner who helps you understand what comes next.
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That’s what we’re here to provide.
Bookkeeping, Payroll & Tax Services for West Valley Businesses
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Monthly books that are reconciled, current and ready for tax time.
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Monthly bookkeeping in QuickBooks Online or Desktop
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Cleanup and catch-up for books that are behind
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Arizona TPT and sales tax filing
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Construction accounting, including AIA billing and Textura
From $750/month
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Payroll run on time, with taxes deposited and filed for you.
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Weekly, biweekly or monthly payroll
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Federal and Arizona payroll tax filings, W-2s and 1099s
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New hire reporting and E-Verify
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Employee handbooks, HR policies and onboarding
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​S-Corp shareholder payroll and reasonable salary setup
From $25 per employee per pay period
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Federal and Arizona returns, plus planning so next year has fewer surprises.
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Individual, self-employed and rental returns
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S-Corp and partnership returns
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Quarterly estimates and tax planning
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Help with IRS and Arizona notices
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​Year-round tax advisory
Personal returns from $275
Tax advisory from $49/month
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Start your business the right way and plan with real numbers.
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LLC setup and new business filings
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Budgets, forecasts and strategic planning
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Succession planning
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Mobile notary and signing agent
​From $150/hour
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One-on-one training so you can run your own books with confidence.
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QuickBooks Online and Desktop
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Arizona TPT tax
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Bookkeeping basics for you or your team
