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Resources & Info
Everything you need—career opportunities, important dates, client tools, and community resources—all in one place.
Join Our Team
Build your career with a firm that’s been named one of the North Bay’s “Best Places to Work” for over a decade.
- 14+ Years Best Places to Work
- Firm Trips (Spain, Croatia, Alaska)
- Nicaragua and El Salvador Eyecare Missions
- Flexible Work Options
- CPE & Training Support
Why Linkenheimer?
We’re not your typical accounting firm. With 94 years of history and a culture that prioritizes people over billable hours, we’ve built something special in Sonoma County.
Our team members stay—and that says everything.
We believe in work-life balance (and actually practice it), investing in professional development, and creating an environment where you can do meaningful work with clients you genuinely enjoy.
Open Positions
Current opportunities at Linkenheimer
Upcoming Events
Webinars, workshops, and community events to help you stay informed and connected.
Mar
15
2026
Webinar
2025 Tax Law Changes: What Business Owners Need to Know
Join our tax team for a comprehensive overview of new legislation affecting your business.
Apr
02
2026
Workshop
Succession Planning Essentials
A hands-on workshop for business owners thinking about their exit strategy.
Apr
18
2026
Community
Rotary Business After Hours
Network with local business leaders at our hosted Rotary event.
Want to be notified about upcoming events?
Important Tax Deadlines
Key dates to keep on your radar. Missing a deadline can mean penalties—we’re here to help you stay on track.
Jan
15
Q4 Estimated Tax Payment
Fourth quarter estimated tax payment due for individuals and businesses.
Individual
Mar
15
S-Corp & Partnership Returns
Form 1120-S and Form 1065 due for calendar-year S-corporations and partnerships.
Business
Apr
15
Individual Tax Returns Due
Form 1040 due. Also C-Corp returns (Form 1120) and Q1 estimated payments.
Individual
Jun
15
Q2 Estimated Tax Payment
Second quarter estimated tax payment due. Also deadline for US citizens abroad.
Quarterly
Sep
15
Extended Business Returns
Extended S-Corp, Partnership returns due. Q3 estimated payments also due.
Business
Oct
15
Extended Individual Returns
Extended Form 1040 and C-Corp returns due. Last chance for prior-year IRA contributions.
Individual
Client Portal Access
Secure, 24/7 access to your documents, tax returns, and financial information.
CCH Axcess Document Portal
Your secure portal to upload and access files from your CPA.
- Upload documents securely
- Review and approve tax returns
- E-sign from any device
- Access prior-year returns
- Download financial statements
Pay Your Invoice
Convenient online payment options for your Linkenheimer invoices.
- Pay by credit card or ACH
- Set up autopay
- Download receipts
- Secure, encrypted transactions
Need help accessing your portal? Having technical issues?
Disaster Relief Resources
Supporting our community through difficult times—because neighbors help neighbors.
We're Here to Help
Sonoma County has faced more than its share of devastating wildfires, and Linkenheimer has been here for every one. When disaster strikes, understanding the tax implications and available relief can make a real difference in your recovery.
If You’ve Been Affected:
- Document everything — Photos, receipts, insurance correspondence
- Check IRS disaster declarations — Extended deadlines may apply
- Understand casualty loss rules — Complex but valuable deductions
- Consider timing strategies — Claim losses in current or prior year
Schedule a Disaster Recovery Consultation
Schedule a Disaster Recovery Consultation
Helpful Resources
IRS Disaster Relief
Official IRS information on tax relief for disaster victims, including current disaster declarations.
FEMA Assistance
Apply for federal disaster assistance including temporary housing, home repairs, and other needs.
CAL FIRE Information
Current fire information, evacuation notices, and recovery resources for California.
Sonoma County Recovery
Local resources for fire recovery, rebuilding permits, and community support programs.
2-1-1 Sonoma County
Free, confidential information and referral service connecting you to local resources.
More Resources
Tools, guides, and information to help you make better financial decisions.
Blog
Tax tips, business strategies, and financial insights from our team.
Blog
Tax tips, business strategies, and financial insights from our team.
FAQs
Answers to common questions about our services and processes.
FAQs
Answers to common questions about our services and processes.
Alliott Global Alliance
Our international network of accounting and law firms in 100+ countries.
Alliott Global Alliance
Our international network of accounting and law firms in 100+ countries.