Tax Problems
Unfiled returns, back taxes, underreporting — how these happen and how to fix them.
Get Free Case Review16 guides in Tax Problems
- Unfiled Tax Returns: How to Get Back Into Compliance Without PanicHave years of unfiled tax returns? Learn the IRS's non-filer enforcement process, how Substitute for Return (SFR) works, and the safest way to come back into compliance.
- Back Taxes: Understanding What You Owe and How to Resolve ItOwe IRS back taxes? Learn what back taxes are, how interest and penalties compound your balance, all resolution options available, and how to stop the IRS from enforcing collection.
- IRS Substitute for Return (SFR): What Happens When the IRS Files for YouWhen you don't file, the IRS files a Substitute for Return using income documents it has on file — and the result is always worse than filing yourself. Learn what an SFR is and how to replace it.
- Trust Fund Recovery Penalty: Personal Liability for Business Payroll TaxesThe Trust Fund Recovery Penalty makes business owners personally liable for unpaid employee payroll taxes. Learn who is at risk, how to fight it, and how to protect yourself.
- IRS Audit Defense in Burbank and Los Angeles — Professional RepresentationFacing an IRS audit in Burbank or Los Angeles? Calculus Tax, Inc. provides professional audit defense and IRS representation for individuals and businesses across LA County.
- Payroll Tax Problems: IRS Enforcement, Penalties, and Business Relief OptionsUnpaid payroll taxes are one of the IRS's highest enforcement priorities. Learn the consequences, penalties, and relief options for businesses with payroll tax problems.
- IRS Audit Reconsideration: How to Reverse an Audit Assessment After the FactMissed your audit response deadline or have new documentation the IRS did not see? Audit Reconsideration can reverse or reduce a prior IRS audit assessment. Learn how.
- Self-Employed Tax Problems: IRS Issues Unique to Freelancers and Sole ProprietorsSelf-employed taxpayers face unique IRS challenges — self-employment tax, quarterly estimates, Schedule C audits. Learn how to resolve back tax issues specific to freelancers and sole proprietors.
- Rental Property Tax Problems: IRS Issues for Landlords and Real Estate InvestorsRental property creates unique IRS problems — passive activity rules, depreciation recapture, unreported income, and audit risk. Learn how to resolve real estate tax issues.
- Cryptocurrency Tax Problems: IRS Issues for Bitcoin and Digital Asset HoldersThe IRS treats cryptocurrency as property and requires reporting every transaction. Learn how to handle unreported crypto gains, IRS notices, and back taxes from Bitcoin and digital assets.
- IRS Tax Lien vs. Tax Levy: Understanding the DifferenceTax lien and tax levy are frequently confused. A lien secures the IRS's interest; a levy is actual seizure. Learn the key differences and how each affects you.
- IRS Notice of Deficiency (90-Day Letter): Your Last Chance Before Tax CourtThe IRS Notice of Deficiency (90-day letter) is the IRS's final determination before Tax Court. Learn what triggers it, your rights, and the critical 90-day deadline.
- IRS Tax Audit After a Whistleblower Report: What to ExpectAn IRS audit triggered by a whistleblower report can be broader and more intensive than routine audits. Learn what to expect and how to defend yourself.
- Is Social Security Taxed After 70? How It Works in 2026Yes, Social Security can be taxed at 70 and after. Learn the income thresholds, how much is taxable, worked examples, California rules, and ways to lower the tax.
- Senior Tax Deductions for 65 and Older in 2026A plain-English guide to senior tax breaks for 2026: the new $6,000 deduction, the larger standard deduction, medical expenses, Form 1040-SR, and California options.
- Tax Debt Relief for Senior Citizens: Your IRS OptionsRetired and owe the IRS? Learn the relief options for seniors, including payment plans, hardship status, penalty relief, offers in compromise, and limits on Social Security levies.