California e-file requirements reach almost every taxpayer in the state, but the specific rule that applies to you depends on which of three agencies collects the tax. The Franchise Tax Board (FTB) handles personal and business income taxes, the California Department of Tax and Fee Administration (CDTFA) runs sales and use tax, and the Employment Development Department (EDD) oversees payroll taxes. Each sets its own threshold for who must file and pay electronically, and each enforces its own penalties.
Personal Income Tax: The Rule Targets Preparers
The FTB’s mandate for individual returns applies to tax preparers, not directly to taxpayers. A preparer who completes more than 100 individual California income tax returns in a year and uses tax preparation software for any of them must e-file every current-year individual return. The count is firm-wide: all returns across every employee and office location add up together, so a preparer who personally handles fewer than 100 can still be covered if the practice as a whole exceeds the threshold.1California Franchise Tax Board. 2025 Handbook for Authorized e-file Providers
Individual taxpayers can still opt out. If you tell your preparer you want a paper return, they must complete FTB 8454, the e-file Opt-Out Record for Individuals, and keep it on file. The form documents the reason, whether you elected out or the preparer had reasonable cause.2California Franchise Tax Board. e-file for Individuals
If you file your own return, you have options. CalFile is the FTB’s free direct-file tool for original returns. Eligibility depends on filing status and federal adjusted gross income. For the 2025 tax year, the AGI ceiling is $252,203 for single filers, $378,310 for head of household, and $504,411 for joint filers. Certain items disqualify you, including capital gains or losses, business income, rental income, and Health Savings Account activity.3Franchise Tax Board. CalFile Qualifications 2025 If you don’t qualify, you can use any approved commercial software on the FTB’s registry.4Franchise Tax Board. Approved e-file Software
When You Must Pay Electronically
Filing electronically and paying electronically are separate requirements. The FTB requires electronic payment from any individual who files an original return with a total tax liability over $80,000 or who makes an estimated tax or extension payment exceeding $20,000. Once you cross either threshold, every future payment must be electronic, regardless of amount, tax type, or year. The payment that triggered the rule doesn’t itself have to be electronic. Everything after it does.5Franchise Tax Board. 2025 Instructions for Form 540-ES Estimated Tax for Individuals
Business Entities: Almost Everyone Must E-File
The FTB casts a wide net for business returns. California law requires any business entity that prepares an original or amended return using tax preparation software to e-file that return. The rule covers corporations (Form 100 and 100S), partnerships (Form 565), LLCs (Form 568), and Water’s Edge filers (Form 100W).6California Franchise Tax Board. About e-file for Business In practice, nearly every professionally prepared business return falls under the mandate, because very few are still prepared by hand.
California also conforms to federal rules under IRC Section 6011(e), which adds a second layer. Any corporation required to file at least 10 returns of any type during the calendar year must e-file its corporate income tax return, and any partnership with more than 100 partners must e-file its partnership return.1California Franchise Tax Board. 2025 Handbook for Authorized e-file Providers
Fiduciary returns on Form 541 for trusts and estates can also be e-filed through approved software.7California Franchise Tax Board. Estates and Trusts
Sales and Use Tax: Thresholds for EFT
The CDTFA strongly encourages electronic filing through its online portal and assigns a filing frequency (quarterly, monthly, or yearly) at registration based on anticipated taxable sales.8California Department of Tax and Fee Administration. Tax Guide for Tax Practitioners – Filing and Payments
Mandatory electronic funds transfer kicks in when your average monthly sales and use tax liability reaches $10,000 or more over a 12-month period. Once you cross that line, all payments must go through EFT. For special taxes and fees, the EFT threshold is higher, at $20,000 average monthly.9California Department of Tax and Fee Administration. Electronic Funds Transfer – Frequently Asked Questions
Out-of-State Retailers
Remote sellers register with the CDTFA and collect California use tax when their total sales of tangible personal property delivered into the state exceed $500,000 in the preceding or current calendar year. The threshold includes nontaxable sales such as sales for resale. Remote sellers covered by this rule must file electronically through the CDTFA’s online portal.10California Department of Tax and Fee Administration. Use Tax Collection Requirements Based on Sales into California Due to the Wayfair Decision – FAQ
Employer Payroll Tax: No Exceptions by Size
The EDD runs the most absolute mandate of the three agencies. Every California employer, regardless of size, must electronically file employment tax returns, wage reports, and payroll tax deposits. The rule covers in-state and out-of-state employers with California payroll alike. There is no volume threshold and no opt-out for taxpayer preference.11Employment Development Department. E-file and E-pay Mandate for Employers
The required forms include the Quarterly Contribution Return and Report of Wages, filed as DE 9 and DE 9C. Even if you paid no wages during a quarter, you still have to file electronically. The noncompliance penalty applies to any paper filing, whether or not wages were reported.12Employment Development Department. E-File and E-Pay Mandate for Employers
Independent Contractor Reporting Is Separate
If you hire independent contractors, you have a reporting duty beyond payroll tax. Any entity required to file a federal Form 1099-MISC for contractor services must also report to the EDD within 20 days of either making payments of $600 or more or entering into a contract for $600 or more, whichever comes first. The EDD encourages electronic reporting through e-Services for Business.13Employment Development Department. Report of Independent Contractor(s) (DE 542) Instructions
Penalties for Filing or Paying on Paper
Each agency enforces its own penalty structure, and the amounts differ enough to matter.
FTB
A tax preparer subject to the mandatory e-file requirement who fails to electronically file an individual return faces a $50 penalty per return. The preparer can avoid the penalty by showing reasonable cause, including the taxpayer electing not to e-file.14Franchise Tax Board. FTB 1024 – Penalty Reference Chart
For mandatory electronic payments, the FTB charges individuals 1% of the amount not paid electronically. Businesses face 10% of the amount paid by non-electronic means.15State of California Franchise Tax Board. Common Penalties and Fees
Individuals may qualify for a one-time penalty abatement covering late-filing or late-payment penalties. It’s a once-in-a-lifetime benefit, available only for taxable years beginning on or after January 1, 2022, and it does not apply to fiduciaries, estates, or trusts.16Franchise Tax Board. One-Time Penalty Abatement
EDD
The EDD imposes two separate penalties under the e-file and e-pay mandate. A paper DE 9 or DE 9C triggers a $50-per-return penalty under CUIC Section 1112.1(a). A payroll tax deposit (DE 88) not submitted electronically triggers a penalty of 15% of the amount due. Both apply even if the underlying return or payment is otherwise timely and accurate. Good cause is the only recognized exception.17Employment Development Department. Information Sheet: Penalty Reference Chart (DE 231EP)
How to Get a Waiver
All three agencies allow waivers, but the grounds are narrow and the approval periods are short.
The FTB’s business entity waiver must be requested annually through its online portal. Acceptable reasons include technology constraints, undue financial burden, or other reasonable cause. For the 2026 calendar year, waiver requests are approved on submission. You can request waivers for the current year plus the two prior years, though future-year requests may be reviewed before approval.18Franchise Tax Board. Business Entity e-file Waiver Request
Individuals subject to the mandatory e-pay requirement can request a waiver by demonstrating circumstances such as a permanent physical or mental impairment.19Franchise Tax Board. Mandatory e-Pay for Individuals
The EDD grants waivers for four consecutive quarters. Once the approval period ends, the employer must either begin filing electronically or submit a new waiver request to avoid penalties.12Employment Development Department. E-File and E-Pay Mandate for Employers