Tax Preparation & Filing Services in Portland, Oregon
Tax season should not be a surprise. Serving businesses and individuals across the Portland Metro area and nationwide, we prepare and file federal and Oregon state returns, claim every legitimate deduction, and ensure total compliance with IRS and Oregon Department of Revenue requirements.
Preparation, filing, and planning
Most tax stress comes from finding out too late. We review your books through the year, flag the liabilities building up, and prepare returns that stand up to scrutiny.
- Federal and state business tax returns
- Individual and self-employed tax filing
- Quarterly estimated tax calculations
- Deduction and credit review
- Notice and assessment response support
Local Portland & Oregon State Tax Compliance Support
Oregon tax regulations require specialized local expertise. From the Oregon Corporate Activity Tax (CAT) and TriMet Transit Tax to Multnomah County Preschool for All and the Portland Clean Energy Community Benefits Fund (PCEF) surcharge, our Portland team ensures your filings are 100% compliant with both IRS and Oregon Department of Revenue rules.
Whether you operate a local storefront in the Portland metro area or manage distributed remote operations across the United States, we provide hands-on filing and strategic tax advisory year-round.
- Oregon Corporate Activity Tax (CAT) calculation and filing
- Portland Clean Energy Surcharge (PCEF) compliance
- Multnomah County & Metro Supportive Housing tax returns
- Federal Form 1120-S, 1065, 1120, and Schedule C filings
- Quarterly estimated tax optimization and IRS notice defense
Understanding what you owe
Tax payable is simply the balance left after what you owe is compared against what you have already paid through withholding, estimated payments, and credits. When that balance is larger than expected, it is almost always because income rose, withholding did not keep pace, or an estimated payment was missed.
We walk you through the calculation line by line, then set up a payment approach that does not strain your cash flow.
Tax Preparation & Filing
Accurate federal and state tax returns for LLCs, S-Corps, C-Corps, partnerships, and individuals to maximize deductions and ensure 100% compliance.
From $300 per filing
Frequently asked questions
How much does tax preparation cost?
Tax preparation and filing starts at $300 per filing. Complexity — multiple states, entity returns, or catch-up filings — affects the final quote.
Do you provide local tax preparation in Portland, Oregon?
Yes. Enter And Post LLC is headquartered in Portland, Oregon. We specialize in Oregon state filings, Multnomah County tax requirements, Portland municipal surcharges, as well as federal corporate and personal tax returns for clients across all 50 states.
Can you help if I already received a notice or assessment?
Yes. We review the notice, check it against your records, and help you respond or arrange an IRS payment plan.
Want to talk it through first?
Connect with our Portland leadership team for a free discovery call.