Yes! You can use AI to fill out Form DE-147S, Confidential Supplement to Duties and Liabilities of Personal Representative (Probate)
Form DE-147S is a confidential document used in California probate proceedings. It serves as a supplement to Form DE-147, allowing the personal representative of an estate to provide their birth date and driver's license number as required by specific local court rules. This information is kept separate from public court files to maintain confidentiality. 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.
DE-147S is part of the
California court forms, California probate forms and California state forms categories on Instafill.
Form Complexity Index
Simple
23 / 100
| Fillable fields | 10 |
| Pages | 1 |
| Fields per page | 10 |
| Sections | 2 |
| Conditional rules | 1 |
| Tables & lists | — |
| Instruction pages | — |
| Instafill Form ID | IF-FORM-DE-147S-CONFIDENTIAL-SUPPLEMENT-TO-DUTIES-AND-LIABILITIES-OF-PERSONAL-REPRESENTATIVE-PROBATE |
DE-147S has a simple Form Complexity Index of 23/100 — 10 fillable fields across 1 page. Instafill’s AI completes it accurately in under a minute.
Form specifications
| Form name: | Form DE-147S, Confidential Supplement to Duties and Liabilities of Personal Representative (Probate) |
| Number of fields: | 10 |
| Number of pages: | 1 |
| FCI: | Simple (23/100) |
| Language: | English |
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It takes less than a minute to fill out DE-147S using our AI form filling.
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How to Fill Out DE-147S Online for Free in 2026
Are you looking to fill out a DE-147S form online quickly and accurately? Instafill.ai offers the #1 AI-powered PDF filling software of 2026, allowing you to complete your DE-147S form in just 37 seconds or less.
Follow these steps to fill out your DE-147S form online using Instafill.ai:
- 1 Navigate to Instafill.ai and upload or select the Form DE-147S.
- 2 The AI will process the form and identify all the required fields, such as the estate name, case number, and personal representative's details.
- 3 Provide the case information, including the name of the decedent's estate and the corresponding case number.
- 4 Enter the personal representative's full name, date of birth, driver's license number, and the state that issued the license.
- 5 Review all the information auto-filled by the AI to ensure complete accuracy before finalizing the document.
- 6 Securely download or print the completed confidential supplement to be submitted to the court clerk as instructed, ensuring it remains separate from public records.
Our AI-powered system ensures each field is filled out correctly, reducing errors and saving you time.
Why Choose Instafill.ai for Your Fillable DE-147S Form?
Speed
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Accuracy
Our AI performs 10 compliance checks to ensure your form is error-free.
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Frequently Asked Questions About DE-147S
DE-147S has a Form Complexity Index of 23 out of 100, placing it in the simple complexity tier. This score is calculated deterministically from the form’s own structure using Instafill’s published Form Complexity Index methodology, so it can be reproduced and independently verified — it is not a subjective estimate.
For DE-147S specifically, the score reflects 10 fillable fields across 1 page, grouped into 2 sections, and 1 conditional fields that only apply depending on earlier answers. The number of fields is the largest factor in the base score (weighted 36%), followed by how difficult those fields are to complete based on their type, where free-text and signature fields count for more than simple checkboxes (26%). The number of pages that actually contain fields (15%), the amount of conditional “fill-only-if” logic (16%), and how many sections the form is divided into (7%) account for the rest of the base. On top of that base, the index adds points for tables and repeating lists, bundled instruction pages, and dense page layouts — capturing difficulty the base alone can miss.
In practical terms, a simple score means the form is quick to complete, with only a handful of straightforward fields. Instafill removes that effort entirely: our AI reads your information, maps each value to the correct field — including the conditional ones — and completes DE-147S accurately in under a minute, with every field available for you to review before you download. See exactly how the Form Complexity Index is calculated.
This form is a confidential supplement used to provide the personal representative's date of birth and driver's license number to the court. It is only used if required by local court rules for identity verification purposes.
The person appointed as the personal representative for a decedent's estate must fill out this form. However, it is only required if the specific county court handling the probate case has a local rule mandating it.
No, this form is explicitly confidential. The instructions direct the court clerk to keep this document separate from the public court file to protect your private information.
No, the form provides a clear instruction: "Do not attach this supplement to Form DE-147." It must be submitted as a separate, confidential document.
You need to check the local rules for the specific California Superior Court where the probate case is filed. If the local rules require it, you must submit this form; otherwise, it is not necessary.
You must provide the estate name, case number, and your full name, date of birth, and driver's license number and state.
The form specifically asks for a driver's license. If you do not have one, you should contact the court clerk for instructions or consult with an attorney, as you may need to provide an alternative form of identification.
You should file it separately from all other documents and clearly mark it as confidential. Follow your local court's specific procedures for filing confidential documents to ensure it is handled correctly and not placed in the public record.
In the "ESTATE OF" field, you should write the full legal name of the deceased person (the decedent) whose estate you are managing.
Yes, services like Instafill.ai use AI to accurately auto-fill form fields, which can save time and help prevent errors. This ensures your name, case number, and other details are consistent with your other probate filings.
You can use a service like Instafill.ai to fill out this form online. Simply upload the PDF, and the platform will make the fields interactive so you can type your information, save, and print for submission.
If you have a non-fillable or 'flat' PDF, you can use a tool like Instafill.ai. It can convert the document into an interactive, fillable form that you can easily complete on your computer.
Compliance DE-147S
Validation Checks by Instafill.ai
1
Ensures Estate Name is Provided
Validates that the 'ESTATE OF (Name)' field is not empty. This is critical for associating this confidential supplement with the correct decedent's estate. A missing estate name would make the document impossible to file correctly, leading to processing delays or misfiling.
2
Ensures Case Number is Provided
Checks that the 'CASE NUMBER' field has been filled out. The case number is the primary identifier for the legal proceedings in the court system. Without it, the form cannot be linked to the specific probate case it supplements, causing rejection or significant delays.
3
Requires Personal Representative's Name
Verifies that the 'Name' field for the personal representative is not blank. This is the primary individual this confidential form is about. Failure to provide the name makes the entire document's purpose moot and prevents proper identification by the court.
4
Requires Personal Representative's Date of Birth
Ensures that the 'Date of birth' field for the personal representative is filled. This information is a key identifier used for background checks and identity verification by the court. An empty field would halt the verification process and render the submission incomplete.
5
Requires Driver's License Number
Validates that the 'Driver's license number' field is not empty. This is another critical piece of identifying information requested by the court for verification. If the court requires this form by local rule, this field is considered mandatory for submission.
6
Requires Driver's License Issuing State
Checks that the 'State' field associated with the driver's license is provided. A license number without the issuing state is ambiguous and incomplete for verification purposes. This validation ensures the complete license information is captured for accurate record-keeping.
7
Validates Date of Birth Format and Plausibility
This check ensures the 'Date of birth' is entered in a valid format (e.g., MM/DD/YYYY) and represents a plausible date. It should not be a future date, and it should correspond to an age appropriate for a personal representative (e.g., over 18). This prevents data entry errors and ensures the provided information is logical.
8
Verifies Personal Representative is of Legal Age
Calculates the age based on the 'Date of birth' and verifies that the personal representative is at least 18 years old. Serving as a personal representative is a legal duty that requires the individual to be an adult. This check prevents the submission of a form for an individual who is legally ineligible to serve.
9
Validates Court Case Number Format
Verifies that the 'CASE NUMBER' follows a typical format for court case numbers, which often includes a mix of letters, numbers, and hyphens. This check helps catch typographical errors and ensures the number is structured correctly for the court's system. An invalid format could result in the document being rejected or misfiled.
10
Validates Driver's License State Abbreviation
Ensures the 'State' field contains a valid two-letter U.S. state or territory abbreviation. This standardizes the data and prevents errors from misspellings or non-standard entries like 'California'. Using a predefined list of valid abbreviations is essential for data integrity.
11
Validates California Driver's License Format
If the issuing 'State' is 'CA', this check verifies the 'Driver's license number' matches the standard California format (one letter followed by seven digits). Since this is a California Judicial Council form, validating against the local format is a key quality check. This helps ensure the accuracy of a very common entry.
12
Ensures Driver's License Number and State are Paired
This logical check ensures that if a 'Driver's license number' is entered, the 'State' field must also be filled out, and vice versa. These two pieces of information are codependent for identification. This validation prevents incomplete data pairs from being submitted.
13
Validates Personal Representative Name Structure
Checks that the 'Name' field for the personal representative contains at least two words (presumably a first and last name) and does not consist solely of numbers or special characters. This is a basic heuristic to ensure a valid-looking name has been entered, rather than placeholder text or garbage data.
Common Mistakes in Completing DE-147S
This is the most critical error. Despite numerous warnings on the form, filers sometimes hand this document to the court clerk along with public records or upload it to a public e-filing portal. This mistake leads to a severe breach of privacy, exposing the personal representative's birth date and driver's license number. Always follow the form's explicit instructions to submit this document separately and ensure the clerk understands it is confidential.
The form explicitly states, 'Do not attach this supplement to Form DE-147.' People often bundle related documents together, but doing so here would cause this confidential information to be filed publicly with the main DE-147 form. This action directly compromises the confidentiality the form is designed to protect, leading to potential identity theft. Always submit this form as a separate, standalone document as instructed.
Filers may accidentally write the wrong case number or misspell the decedent's name in the 'ESTATE OF' field. This happens due to typos or managing multiple cases. An error here can cause the confidential supplement to be lost, misfiled, or not linked to the correct probate case, leading to processing delays and requests for resubmission from the court.
A common point of confusion is entering the deceased person's (decedent's) information in the section for the personal representative. The fields for name, date of birth, and driver's license number are for the living person appointed to manage the estate. This error renders the form useless for its intended purpose of verifying the representative's identity and will require correction and refiling.
People frequently enter their driver's license number but forget to fill in the adjacent field for the issuing state. A driver's license number is not unique without its corresponding state, making verification impossible for the court. Always double-check that both the full, correct license number and the issuing state are provided.
The personal representative may write a nickname or shortened version of their name (e.g., 'Mike' instead of 'Michael'). Legal documents require the full legal name as it appears on government-issued identification. Using an informal name can create discrepancies and delays in the identity verification process, forcing the court to reject the form.
Filers often enter dates in various formats (e.g., DD/MM/YYYY, or writing out the month), which can conflict with the court's data entry system. This can lead to recording errors or rejection of the form. To prevent this, use the standard MM/DD/YYYY format unless otherwise specified by the court. AI-powered tools like Instafill.ai can help by automatically formatting dates correctly to meet court requirements.
When this PDF form is printed and filled out by hand, poor penmanship can make names and numbers unreadable. An illegible form will be rejected by the court clerk, as they cannot accurately enter the data. To avoid this, use a tool like Instafill.ai, which can convert non-fillable PDFs into electronically fillable versions, ensuring every entry is clear, legible, and professional.
The form's instructions state it should only be used 'if the court by local rule requires' it. Some filers submit it proactively in all cases, unnecessarily providing confidential information and creating extra paperwork for the court. This can be avoided by checking the specific local rules for the county probate court before preparing and submitting this supplement.
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