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Yes! You can use AI to fill out Form CA-230, Three-Day Notice to Pay Rent or Quit

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Form CA-230, Three-Day Notice to Pay Rent or Quit, page 1
Moderate · 54/100Form Complexity Index

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What this form asks for

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Form CA-230, the Three-Day Notice to Pay Rent or Quit, is a legal notice served by a landlord to a tenant in California who has failed to pay rent. This document is a mandatory prerequisite for a landlord to initiate eviction proceedings (an unlawful detainer lawsuit) for non-payment, formally demanding the tenant pay the specified overdue rent within three days or vacate the property. Today, this form can be filled out quickly and accurately using AI-powered services like Instafill.ai, which can also convert non-fillable PDF versions into interactive fillable forms.
Fillable fields65
Pages3
Sections21
Tables and lists1
Questions that depend on earlier answers20
Form Complexity IndexModerate, 54/100

The AI checks your answers before you download

14 checks built for this form, so a wrong date or a missing answer is caught before anyone else sees it.

Verifies Total Rent Calculation

Checks that the sum of all itemized rent period amounts equals the 'Total Amount Due'. This is crucial for the legal validity of the notice, as an incorrect amount can invalidate the entire eviction process. If the amounts do not match, the form submission should be rejected with an error prompting the user to correct the itemization or the total.

Ensures Rental Period Date Chronology

Validates that for each itemized rental period, the 'End Date' is on or after the 'Start Date'. This prevents logical errors and ensures the rental period described is a valid time frame. An invalid period could be legally challenged, so the system flags this to prevent nonsensical date ranges.

Validates Service Date is Not in the Future

Confirms that the 'Notice Served Date' is not a future date. A notice cannot be legally served on a date that has not yet occurred. This check prevents post-dating and ensures the integrity of the legal timeline established by the notice.

Requires At Least One Payment Method

Ensures that at least one checkbox under 'Acceptable methods of payment' is selected. The law requires the landlord to specify how the tenant can pay the overdue rent. Failing to provide a valid payment method can render the notice defective.

Validates In-Person Payment Hours Logic

Checks that if a 'Start Time' for in-person payments is entered, an 'End Time' is also entered, and the 'End Time' is later than the 'Start Time'. This ensures the provided payment window is logical and clear to the tenant. It also requires at least one day of the week to be selected if times are provided.

Cross-references Service Dates

Verifies that the 'Notice Served Date' on page 1 is identical to the service date (day, month, year) entered in the 'Proof of Service' section on page 2. Consistency between these dates is critical for establishing a clear and legally defensible timeline of events. A mismatch could be used to challenge the validity of the service.

And 8 more checks
  • Enforces Exclusive Service Method Selection
  • Validates Total Amount Due Format
  • Ensures Completeness of Tenant and Property Address
  • Validates Signature Date vs. Service Date
  • Requires Payment Delivery Information
  • Validates Proof of Service Execution Date
  • Validates ZIP Code Format
  • Conditional Field for Personal Service

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How to Fill Out CA-230 Online for Free in 2026

What the AI walks you through.

  1. Navigate to Instafill.ai and upload or select Form CA-230.
  2. Enter the full names of all tenants and the complete address of the rental property.
  3. Itemize the overdue rent by specifying the rental periods and the amount due for each, then enter the total sum.
  4. Provide clear payment instructions, including the payee's name, delivery address, and acceptable payment hours and methods.
  5. The landlord or their authorized agent must sign and date the notice before serving.
  6. After serving the notice, complete the 'Proof of Service' section, detailing the date, time, and method of delivery.
  7. Review all entered information for accuracy with the AI assistant, then download the completed form for your records and for serving.

Common Mistakes in Completing CA-230

The ones the AI is built to catch.

Including Non-Rent Charges in the Amount Due
Landlords often mistakenly include late fees, utility bills, or other non-rent charges in the total amount demanded. California law for a Three-Day Notice to Pay Rent or Quit is extremely strict and only allows the demand for actual, past-due rent. Including any other fees will invalidate the notice, forcing the landlord to restart the entire process and potentially lose in court.
Incorrect Total Rent Calculation
This mistake involves a mathematical error where the sum of the itemized rental periods does not match the 'total sum' listed. This can happen from a simple typo or miscalculation. If the amount demanded is even slightly overstated, a court will rule the notice is defective, leading to the dismissal of any subsequent eviction lawsuit.
Incomplete Tenant Identification
The form requires the full names of 'All Residents (tenants and subtenants)'. A common error is to list only one tenant or use incomplete names, failing to include all adult occupants named on the lease. This can create a legal loophole, as an unlisted tenant can claim they were not properly served, complicating and delaying the eviction process.
Omitting Payment Location and Hours
The law requires the notice to specify a physical address where the tenant can personally deliver the rent, along with the specific days and hours payment is accepted. Landlords sometimes forget to fill out this section on page 2 completely, leaving out the times or days. An incomplete or missing payment location and schedule makes the notice legally deficient, as the tenant is not given a clear opportunity to cure the default.
Falsifying the Proof of Service Method
The 'Proof of Service' section is a sworn declaration made under penalty of perjury. A frequent and serious error is checking the wrong box, such as claiming 'Personal Delivery' when the notice was actually posted on the door. This invalidates the service, is grounds for immediate dismissal of an eviction case, and exposes the server to legal penalties for perjury.
Incorrect Date of Service
The date the notice is served is critical as it starts the three-day clock for the tenant to comply. Entering the wrong date, either on the main notice or in the Proof of Service section, can lead to filing an eviction lawsuit prematurely. If a landlord files before the legal notice period has expired, the case will be thrown out, wasting time and money.
Ambiguous or Incorrect Rental Periods
Each line item for rent due must correspond to a specific and accurate rental period (e.g., 'from March 1 through March 31'). Mistakes include using vague descriptions like 'March rent' or entering incorrect start and end dates. This ambiguity can be used by the tenant as a defense, arguing the notice is unclear about what is owed, potentially rendering it invalid.
Incomplete Substitute or Posted Service
When not serving the tenant personally, the law requires a two-step process: 'substitute service' (leaving with an adult) and 'posting' both require a copy to also be mailed. A critical error is performing the first step (leaving or posting) but forgetting to mail a copy on the same day. The form explicitly states 'AND MAILING', and failing to complete this second step makes the service invalid.
Using an Incorrect Landlord or Payee Name
The notice must state who the rent is 'PAYABLE TO'. Landlords may incorrectly list their personal name when the property is owned by an LLC or trust, or vice-versa. The name should be consistent with the legal owner listed on the lease agreement to avoid confusion and potential legal challenges from the tenant about who to pay.
Failure to Specify Accepted Payment Methods
Page 2 provides checkboxes for acceptable payment methods like 'Personal Check', 'Money Order', or 'Cash'. Failing to check any of these boxes leaves the tenant without clear instructions on how to tender payment. This omission can be a defense for the tenant, who could argue they were unable to comply because the required payment format was not specified.

Frequently Asked Questions About CA-230

 

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How does the AI fill out CA-230?
You answer a few questions in plain words, or upload a document you already have. The AI reads what you give it and puts each answer into the right field of CA-230, on every page, in seconds. It checks the answers against the form's own rules, and you review and change anything before you download, print or sign.
What happens to my information?
It is encrypted in transit and at rest, and it is never used to train AI.
How complex is CA-230 to fill out?
CA-230 has a Form Complexity Index of 54 out of 100, in the moderate tier: 65 fillable fields across 3 pages. Instafill.ai's AI fills it in under a minute, with every field there for you to review before you download.
What is the purpose of the 'Three-Day Notice to Pay Rent or Quit' form?
This is a legal document used by a landlord in California to demand that a tenant either pay their overdue rent or vacate the property within three business days.
Who needs to fill out this form?
The landlord or their authorized agent (like a property manager) must fill out and serve this form to a tenant who has failed to pay rent.
I'm a tenant and I received this notice. What does it mean?
It means your landlord is formally requesting that you pay the total rent amount listed on the notice or move out within three business days. Failure to do either may lead to an eviction lawsuit.
How do I correctly calculate the three-day deadline?
Do not count the day you received the notice, and do not count Saturdays, Sundays, or judicial holidays. Your three-day period begins on the next business day after service.
What happens if I don't pay or move out within the three days?
The landlord can file a legal action (an unlawful detainer lawsuit) to evict you. This could result in a court judgment against you, which may include court costs and attorneys' fees.
Can the landlord include late fees or other charges on this notice?
This form is specifically for demanding 'rent.' Including other charges like late fees or utilities could invalidate the notice, so landlords should be cautious and typically only include the actual past-due rent amount.
What is the 'Proof of Service' section for?
The 'Proof of Service' is a mandatory section where the person who delivered the notice formally declares under penalty of perjury how and when it was served. This is critical evidence if the case goes to court.
How must this notice be delivered to the tenant?
The form outlines three legal methods of service: personally handing it to the tenant, leaving it with a suitable person at the property and mailing a copy, or posting it in a conspicuous place and mailing a copy.
Where do I specify the payment details for the tenant?
Page 2 of the form has a detailed section where you must provide the name and address for payment delivery, the hours for in-person payment, and the acceptable payment methods (e.g., check, money order, cash).
What information is required to fill out the rent itemization section?
You must list each rental period for which rent is due (e.g., 'from 03/01/2025 through 03/31/2025') and the specific dollar amount owed for that period.
Can an AI tool help me fill out this form?
Yes, services like Instafill.ai use AI to accurately auto-fill form fields from your saved data, which can save time and help prevent errors when preparing the notice.
How can I fill out this form online?
You can use a service like Instafill.ai to fill out this form online. Simply upload the document, and the platform will make it an interactive, fillable form you can complete, sign, and download.
What can I do if my PDF version of this form is not fillable?
If you have a flat, non-fillable PDF, you can upload it to a platform like Instafill.ai. It can convert the static document into an interactive form that you can easily fill out on your computer.
Who signs as the 'Declarant' on the Proof of Service?
The 'Declarant' is the individual, who must be at least 18 years old, that physically served the notice to the tenant. This could be the landlord, their agent, or another adult acting on their behalf.
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