How to Migrate Existing Website Forms in HubSpot
Bringing the forms you already have into HubSpot — by connecting or rebuilding them — makes sure every submission lands in your CRM, so no lead slips between systems.
Most businesses already have forms on their website. The problem isn't that the forms don't exist — it's that their submissions don't reliably reach the CRM. A "Contact us" form built in WordPress, a signup box from a plugin, a download form from another tool: each one captures leads into its own little silo, and someone has to remember to move that data by hand, if it moves at all.
The fix isn't a redesign. It's migration. You take the forms you already have and make sure HubSpot is where their submissions live — either by connecting each form so it feeds HubSpot, or by rebuilding it as a native HubSpot form and placing it back on your site.
Here's how to think about migrating your existing website forms into HubSpot, the two paths for doing it, and where teams tend to get tripped up.
What migrating forms actually means
Migrating a form isn't about changing what it looks like or what it asks. It's about making sure that when someone submits it, HubSpot creates or updates a contact record — so that lead is captured, attributed, and ready to follow up on.
There are two ways to get there, and the right one depends on the form and your HubSpot plan. You can connect an existing form so HubSpot captures its submissions without rebuilding anything, or you can rebuild the form natively in HubSpot and place it back on your site. Either way, the outcome is the same: one system holds your leads instead of several.
Connect or rebuild: two paths to the same result
Rebuilding recreates the form as a native HubSpot form. Its fields map directly to your CRM, the data is as clean as it gets, and it works on any HubSpot plan. This is usually the simplest, most durable choice — especially for straightforward forms.
Connecting keeps your existing form exactly as it is and captures its submissions into HubSpot. This is useful when a form is heavily customized or tied to a plugin you'd rather not touch. It relies on HubSpot's ability to capture non-HubSpot forms, which requires a Marketing Hub Pro plan and the HubSpot tracking code installed on your site.
Neither path is "better" in the abstract — the right call is made form by form. What matters is that after migration, every form on your site feeds one place. HubSpot's own guidance walks through both creating a native form and capturing existing non-HubSpot forms; the strategy is deciding which path fits each form.
Why this is worth doing deliberately
When your existing forms feed HubSpot, the payoff is quiet but real:
- Every website form lands leads in one system, so nothing slips between tools
- Contact records get created and updated automatically from real submissions
- Your form data becomes usable for segmentation, follow-up, and reporting
- Forms on your own site and forms on HubSpot pages behave consistently
- You get a clean foundation to standardize and automate forms later, when you're ready
Where teams go wrong
A few patterns we see constantly:
Assuming an embed "just works." A form that renders fine in preview can still fail to create a record on the live page. Migration isn't done until a real test submission produces a real contact.
Duplicating contacts. Whether HubSpot recognizes returning visitors — and avoids creating duplicate records — depends on the tracking code being installed correctly, especially for forms on an external site. Skip that and you get duplicate contacts and broken pre-fill.
Fields with nowhere to land. If a form collects a piece of information that doesn't map to an actual field in your CRM, that data is effectively invisible — it can't be segmented or acted on. Migrating a form cleanly means making sure each field has a home.
Turning a migration into a rebuild. It's tempting to redesign every form "while you're in there." That's a different, bigger project. Migrating what you have keeps the work fast; standardizing and automating your forms is a deliberate next step, not something to fold in mid-migration.
How we approach it
We treat this as a focused migration, not a form redesign. First we take an inventory of every form on your site and where it lives. Then we decide, form by form, whether to connect it or rebuild it — based on how the form is built and what your HubSpot plan supports. We map every field to a real CRM property, place or embed each form where it belongs, and test a real submission on the live page to confirm the lead actually lands.
The goal is simple and honest: your existing forms, feeding HubSpot, verified working. When you're ready to go further — standardizing fields across all your forms, adding new form types, or automating follow-up and routing — that's a natural next step we scope on its own, so this migration stays fast and clean.
Benefits at a glance
- Your existing forms feed HubSpot — no more leads lost between systems
- Submissions create and update contact records automatically
- Clean, mapped data that's ready for segmentation and reporting
- Consistent behavior across HubSpot pages and your own website
- A tested, verified starting point you can build on later
If you want to learn more about how to migrate your existing website forms into HubSpot the right way, contact The Gist.