Billing Servicing, Unused Line, and Field Exam Fees on One Borrower

Facility terms, advance rates, borrowing base calculations, and fee schedules belong in your loan servicing system, which already tracks them accurately against each borrower's specific facility. Treat Stripe Billing or Chargebee as a billing and collection layer that receives calculated fee amounts, not a system that independently tracks or recalculates loan terms. Trying to replicate facility-level logic inside the billing platform is where duplicate data entry, and the errors that come with it, actually start.

An unused line fee is calculated against the unused portion of a borrowing base that changes as the borrower draws and repays, which means it's rarely the same amount two months running. Rather than setting it up as a fixed recurring price, treat it the way you would any calculated fee: computed in your loan servicing system each period, then posted to the billing platform as a one-time invoice item for that cycle. Both platforms handle this the same way, as a line item you update rather than a subscription price you set once.

A borrower paying several different fee types in a given period benefits from seeing each one itemized separately, since a field exam charge is easy to question if it's buried inside a number that also includes routine servicing. Set up each fee type as its own line item or add-on tied to the borrower's account, so the monthly invoice clearly breaks out what's routine, what's usage-based, and what's a one-off charge like a field exam.

A borrower with multiple facilities, each negotiated at a different time with different terms, needs fee schedules that vary by facility rather than one blended rate applied across everything they owe. Model each facility as its own subscription or set of line items under the borrower's customer record, rather than trying to average or combine fee schedules into a single simplified charge that doesn't match what was actually negotiated.

Since neither platform is a loan servicing system, the deciding factor is realistically how much manual re-entry your team tolerates between your servicing system and the billing platform. If your servicing system can export calculated fees in a format your team, or a developer, can post into Stripe Billing without much friction, that's often the lower-effort path. If you're managing many borrowers with several facilities each, Chargebee's more structured add-on and subscription management makes it easier for someone outside engineering to confirm every fee type is current for every facility without reverse-engineering it from raw data.

Before setting up billing for a borrower, check that:

• Facility terms, advance rates, and fee schedules stay in your loan servicing system, with the billing platform receiving only calculated amounts.
• Variable fees such as the unused line fee are calculated each period and posted as one-time invoice items, not fixed recurring prices.
• Servicing, unused line, and field exam fees each appear as their own line item, so a borrower can question one without disputing all.
• Each facility has its own subscription or set of line items under the borrower's customer record, matching what was negotiated.
• A new borrower's setup reflects their own negotiated terms, not a copy of an existing borrower's subscription.

A borrower questioning a field exam charge, disputing the amount or the timing of the exam itself, needs a resolution process that doesn't depend on the billing platform explaining the charge on its own, since neither Stripe Billing nor Chargebee holds any context about why a specific exam was scheduled or what it covered. Keep exam scheduling notes and justification in your loan servicing or portfolio management system, and treat a dispute as a servicing conversation first, with the billing platform simply reflecting whatever resolution, a credit, a reversal, or confirmation of the original charge, comes out of that conversation. Trying to resolve the dispute inside the billing platform itself usually means someone reconstructing context the platform was never given in the first place.

A new borrower's facility often carries a fee structure negotiated specifically for their risk profile and collateral type, and copying an existing borrower's subscription setup as a shortcut risks carrying over terms that were never actually agreed to for the new relationship. Build each new borrower's subscription from the signed facility agreement directly, confirming every fee type and its calculation basis line by line, rather than cloning a similar-looking existing customer record and editing it, which is where an old borrower's terms most often leak into a new one by accident.