Feature Guide · 24 March 2026

How to Use Conditional Fields
in Document Signing

Show, hide, and require fields based on signer input. Create smarter documents that adapt to each signer, reduce errors, and eliminate unnecessary fields.

What Are Conditional Fields?

Conditional fields are document fields that dynamically change based on the signer's input. Instead of showing every possible field to every signer, conditional logic lets you create documents that adapt -- showing only what is relevant.

For example, a standard service agreement might include optional clauses for rush delivery. Rather than cluttering the document with fields that most signers will leave blank, you can set a condition: "If rush delivery is checked, show the rush surcharge acknowledgement."

This makes documents cleaner, reduces signer confusion, and ensures that required information is only collected when it is actually needed.

Why It Matters

Documents with conditional fields see 35% fewer completion errors and 20% faster signing times. Signers only see what is relevant to them, reducing cognitive load and the chance of missing a required field.

Conditional Operators

SignAndGo supports three operators for conditional field rules. These cover the vast majority of real-world document workflows.

=

Equals

The target field appears when the source field value matches exactly.

Example

If "State" equals "NSW", show "NSW-specific disclosure" field.

!=

Not Empty

The target field appears when the source field contains any value.

Example

If "Phone Number" is not empty, show "Preferred contact time" field.

Checked

The target field appears when a checkbox or radio option is selected.

Example

If "Acting on behalf of a company" is checked, show ABN and company name fields.

Step-by-Step Setup Guide

1

Upload Your Document

Upload a PDF or choose from SignAndGo templates. The document opens in the field editor where you can place signature, text, checkbox, and dropdown fields.

2

Place Your Source Field

Add the field that will control the condition. This could be a checkbox ("Is this a company?"), a dropdown ("Select your state"), or a text field ("Enter your ABN").

3

Place Your Target Field

Add the field that should appear or become required when the condition is met. For example, a "Company Name" text field that only appears for business entities.

4

Set the Condition

Select the target field and open the conditional logic panel. Choose the source field, select the operator (Equals, Not Empty, or Checked), and set the trigger value if applicable.

5

Choose the Action

Decide what happens when the condition is met: show the field, hide the field, or make it required. You can also chain multiple conditions for complex logic.

6

Test and Send

Use the preview mode to test your conditional logic. Click through the document as a signer would, verifying that fields appear and hide correctly. Then send to your recipients.

Real-World Use Cases

Employment Contracts

Show different clauses based on employment type. Full-time employees see superannuation fields; contractors see ABN and invoice terms.

Lease Agreements

Reveal pet bond fields when "Pets" is checked. Show company guarantor fields when tenant is a business entity.

Service Agreements

Display optional add-on pricing when specific services are selected. Show payment schedule fields for projects over a threshold.

Insurance Forms

Reveal vehicle details when "Motor Vehicle" is selected as asset type. Show dependant information when "Dependants" checkbox is ticked.

Validation Best Practices

Keep Conditions Simple

Start with single conditions before chaining. Most workflows only need one condition per field. Complex chains increase the chance of logic errors.

Use Checkboxes for Binary Decisions

When the condition is yes/no, use a checkbox with the "Checked" operator. It is the most intuitive for signers and the simplest to configure.

Always Test with Preview

Before sending a document with conditional fields, walk through the signing experience using preview mode. Verify that every combination works as expected.

Avoid Circular Dependencies

Do not create conditions where Field A depends on Field B and Field B depends on Field A. This creates a loop that prevents signers from completing the document.

Frequently Asked Questions

What are conditional fields in document signing?

Conditional fields are form fields that appear, hide, or become required based on the signer's input in other fields. For example, checking a 'Company' checkbox can reveal ABN and company name fields that are otherwise hidden.

What operators can I use for conditional field rules?

SignAndGo supports three operators: 'Equals' (field value matches a specific value), 'Not Empty' (field has any value entered), and 'Checked' (checkbox or radio button is selected). These cover the vast majority of conditional logic needs.

Can I chain multiple conditions together?

Yes. You can set multiple conditions on a single field, requiring all conditions to be met (AND logic) before the field appears. This enables complex workflows like showing payment fields only when both a service type is selected and a specific region is chosen.

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