Des Moines, Iowa • Certified Public Accountants & Advisors
Direct: (515) 555-0119 | frontdesk@alderquinn.example
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Alder & Quinn CPAs & Business Advisors
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Alder & Quinn • Des Moines, Iowa

Tax, bookkeeping, and straight answers for owner-run businesses.

A two-partner CPA firm in Des Moines. Eighty clients, most of them referrals, most of them with us a decade or more. You talk to the partner doing your work, never a call center.

Alder & Quinn partners reviewing financial statements with business client
  • CPAs Licensed in Iowa & Midwest
  • AICPA & Iowa Society of CPAs Members
  • QuickBooks ProAdvisor Certified Since 2014
  • Partner on Every Engagement
Legal & Tax Disciplines

Practice Index

Every engagement starts with a short call to confirm we're the right firm for it.

View Detailed Practice Scope →
01

Small-Business Tax & Planning

Owner-managed companies with $500k to $15M in gross annual revenue.

Annual entity returns, quarterly estimated filings, payroll tax compliance, and entity structure reviews explained in plain English before anything is submitted.

Deliverables: Form 1120-S / 1065 prep, multi-state allocation schedules, quarterly tax projections
02

Full-Charge Bookkeeping & Close

Businesses needing reliable accounting without full-time internal controller overhead.

Monthly closes you can actually read. Bank and merchant reconciliations, vendor ledger cleanups, and clean financial statements delivered by the 10th of every month.

Deliverables: Monthly balance sheet, P&L by department, cash-flow summary, 1099 annual filings
03

Advisory, Valuation & Succession

Founders planning an exit, recapitalization, or major capital expansion within 1–3 years.

Purchasing commercial real estate, restructuring equity, bringing in a minority partner, or preparing for an owner buyout. We model the real cash and tax impact before you commit.

Deliverables: Scenario cash-flow models, buyout structure blueprints, basis calculations
04

IRS & State Audit Defense

Companies facing state sales-tax audits, nexus disputes, or federal audit letters.

Direct partner representation before state revenue departments and the IRS. We review historical returns, handle all formal audit correspondence, and resolve penalty notices.

Deliverables: Power of attorney filings, documentation bundles, formal response briefs

"They caught a depreciation error that saved us eleven thousand dollars. Our last firm missed it three years running."

R. Whitfield, Whitfield Logistics
Direct Partner Access

Managing Partners & Senior Counsel

Every engagement is directly overseen by Sarah Alder or David Quinn.

Sarah Alder, CPA

Managing Partner & Tax Lead CPA, MST (Master of Science in Taxation), University of Iowa

Specializes in pass-through entity tax strategy, multi-state apportionment, and capital gains planning for owner-operated logistics, agriculture, and construction firms.

Direct Focus: Corporate tax compliance, entity elections, state nexus analysis

David Quinn, CPA

Partner & Advisory Director CPA, B.B.A. Accounting, Drake University

Leads client accounting operations, monthly controllership, and business valuation modeling. Former senior manager at regional audit firm before founding Alder & Quinn in 2012.

Direct Focus: Financial reporting, cash flow modeling, owner succession planning
View Full Partner Roster & Bios

Talk to a Partner This Week.

A short call, no charge. We'll tell you honestly whether you need a firm like ours and, if you don't, what to do instead.

Schedule 20-Min Intro Call Call (515) 555-0119