How many fields your enquiry form should have, and which

5 days ago
3 min read

Updated: 2 days ago

Introduction

Every additional field costs you submissions. That is consistent across almost every business that has ever measured it, and it is why the standard advice is to ask for less. The advice is right and incomplete, because a form producing large numbers of enquiries you cannot act on is not obviously better than a shorter list of usable ones.

The useful framing is not how many fields but which. Some fields cost very little and qualify usefully; others cost a great deal and add nothing you could not have asked in a reply. Sorting your fields into those two categories is a fifteen-minute exercise that most businesses have never done.

1. How many fields your enquiry form should have depends on what you need to reply

The scoping test.

Apply it to each field: could I respond usefully without this? If yes, it belongs in the conversation rather than on the form. Run the test on your current form and count how many fields survive it.

2. Three or four is the usual answer

The practical default.

Name, contact detail, and a message describing what they need. Occasionally one more. This is enough to reply properly to almost any enquiry in almost any business. An open message box does more work than several structured fields, because people volunteer what matters to them.

3. Judge fields by cost and value separately

The framework.

Some fields are cheap to complete and informative; some are expensive and useless. A dropdown of job types costs almost nothing; a request for a budget costs a great deal and is frequently answered inaccurately.

4. Phone number is the most expensive common field

The specific case.

A significant proportion of people will not give one, either because they do not want a call or because it feels like a commitment. Making it optional generally raises total enquiries and loses very little. Most people who intend to speak to you provide it anyway when it is optional.

5. Budget questions are answered badly or not at all

Another expensive one.

Buyers frequently do not know, and those who do are reluctant to state it before hearing a price. The information is unreliable and the field costs submissions, which is a poor combination.

6. Use optional fields for useful extras

The compromise.

Anything helpful but not necessary can be optional. A meaningful proportion of people complete optional fields, and nobody is deterred by them.

7. Add a field only for a stated reason

The discipline.

Every field should have a purpose somebody can articulate. Fields added because the information might be useful someday accumulate steadily and are never removed.

8. Test by removing rather than adding

The improvement method.

Take out the least essential field and compare submissions over a quarter. Most businesses find the reduction costs them nothing in usable information and gains them enquiries.

9. Consider a two-step form for longer requirements

The structural alternative.

Ask two easy questions first, then more after they have committed to the process. Completion rates are markedly higher than for the same questions presented at once.

Be careful about collecting personal data you have no use for. Every field creates an obligation to protect, retain and justify the information, and the requirements vary by jurisdiction. Fewer fields is a compliance benefit as well as a conversion one.

Conclusion

Ask only what you need to reply, which is usually three or four fields.

Judge each field on what it costs in submissions against what it actually tells you, treat phone number and budget as expensive fields and make them optional, use optional fields for anything useful but not necessary, require a stated reason before adding anything, test by removing a field and comparing over a quarter, use a two-step form where you genuinely need more, and remember that every field you collect is data you have to look after.