
C-Corp Tax Deadlines 2026: Form 1120 Filing, Estimated Payments, and Extensions
Every 2026 C-Corp tax deadline: Form 1120 filing, quarterly estimated payments (Q4 is Dec 15, not Jan 15), extensions, and the 21% flat corporate rate.
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Every 2026 C-Corp tax deadline: Form 1120 filing, quarterly estimated payments (Q4 is Dec 15, not Jan 15), extensions, and the 21% flat corporate rate.

Every 2026 payroll tax deadline: Form 941 quarterly dates, Form 940, monthly and semi-weekly deposit schedules, penalty tiers, and the lookback period rules.

October 15, 2026 is the final deadline for extended tax returns. Learn what's due, who must file, and the penalties for missing it.

Every 2026 LLC tax deadline by entity election: single-member, multi-member, S-Corp, and C-Corp filing dates, extensions, estimated payments, and penalties.

Every 2026 California tax deadline: FTB filing dates, franchise tax, LLC fees, estimated payments, PTE elections, and extensions for individuals and businesses.

Every 2026 S-Corp tax deadline in one guide: Form 1120-S, K-1 distribution, estimated taxes, payroll deposits, and penalty amounts you need to know.

Every 2026 partnership tax deadline in one guide: Form 1065 filing, K-1 distribution, estimated payments for partners, extensions, and late filing penalties.

See exactly how S Corp election cuts your 15.3% self-employment tax bill. Side-by-side calculations at $75K, $100K, $150K, and $200K net profit levels.

eBay 1099-K tax guide for 2026: new $2,500 reporting threshold, what eBay reports to the IRS, deductions for sellers, and how to file.

Self-employment tax and income tax are two separate bills. Learn how each works in 2026, calculate your total burden, and find strategies to reduce both.

PayPal 1099-K rules for 2026 explained: $20K/200 transaction threshold, goods & services vs friends/family, Venmo rules, and Schedule C reporting steps.

Business vehicle tax deduction guide for 2026: standard mileage (72.5 cents/mile) vs actual expenses, Section 179, depreciation limits, and recordkeeping rules.

W-9 form explained: when to fill it out, what information to provide, and how freelancers and contractors use it for 1099 tax reporting in 2026.

Complete list of rental property tax deductions for 2026. Depreciation, passive loss rules, real estate professional status, and Schedule E reporting.

2026 federal tax brackets for all filing statuses. Learn how marginal rates really work, calculate your effective rate, and see where SE income fits in.

Short-term vs long-term capital gains tax rates for 2026: holding period rules, rate thresholds, NIIT, netting rules, and strategies to reduce your tax bill.

The 9 states with no income tax in 2026: Alaska, Florida, Nevada, NH, South Dakota, Tennessee, Texas, Washington, Wyoming. Taxes, nexus, and LLC rules.

2026 standard deduction amounts: $16,100 single, $32,200 MFJ, $24,150 HOH. Learn who qualifies, who cannot claim it, and how it works with Schedule C.

Complete 2026 crypto tax guide: capital gains rates, Form 8949, new 1099-DA reporting, staking/mining income, DeFi rules, and cost basis requirements.

Form 1099-K reports payments from apps like PayPal, Venmo, and Stripe. Learn the 2026 threshold ($20K/200 transactions), how to report, and avoid errors.

The OBBBA 'No Tax on Tips' deduction lets qualifying workers exclude up to $25,000 in tips from income tax. Here's who qualifies and what it means.

Itemized deductions vs. standard deduction for 2026: Schedule A categories, SALT cap changes, bunching strategy, and how it works for the self-employed.

Owe back taxes? Here's the step-by-step process to file overdue returns, understand IRS penalties, and set up a payment plan to get back on track.

The wash sale rule blocks your capital loss deduction if you rebuy the same security within 30 days. Here's how the 61-day window works in 2026.

How dividends are taxed in 2026: qualified vs ordinary rates, holding period rules, S-corp distributions, NIIT, and reporting on your tax return.

Gross income vs net income explained for freelancers and LLC owners: how each is calculated, why it matters for taxes, and where AGI fits in.

2026 EITC guide for freelancers and self-employed: income limits, credit amounts by children, how SE income qualifies, and step-by-step claiming instructions.

AGI explained for self-employed and freelancers in 2026: how to calculate adjusted gross income, above-the-line deductions, MAGI vs AGI, and why AGI controls your tax breaks.

SALT deduction guide for 2026: the new $40,400 cap under OBBBA, income phaseout rules, pass-through entity tax workaround, and how business taxes differ from SALT.

How to file a tax extension in 2026 using Form 4868 or Form 7004. Covers deadlines, penalties, payment rules, state extensions, and when extensions make sense.
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