Most e-signature tools charge by the seat. You pay for every person on your team who might send a document, whether they send ten a month or none at all. Pay-as-you-go e-signatures work differently: you pay for the documents you send, and nothing for the people who send them.
That difference matters most for businesses where signing volume is uneven. A letting agent has a busy spring, an accountancy firm a busy January, a recruiter a busy week after a big hire. A pricing model that follows your activity can be cheaper and easier to predict than one that follows headcount.
This guide explains how pay-as-you-go e-signatures work, how they compare with per-user subscriptions, who they suit, and what to check before you choose a provider.
What pay-as-you-go e-signatures mean
In a pay-as-you-go model, you buy a set number of documents, often called credits, and each document you send uses one. Some providers sell packs of credits in advance. Others charge per document as you go. Either way, the cost follows how many documents you send, not how many people have a login.
The detail that matters is what counts as a document. Some providers charge per envelope, which is a single send that can hold several documents. Others charge per document. Inkless charges per document sent, with envelope totals capped for small multi-document sends, and does not add fees for extra users or API calls. Check this wording with any provider, because it changes what you actually pay.
Pay-as-you-go vs per-user subscriptions
Neither model is better in every case. The table shows the typical differences.
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|
Pay-as-you-go |
Per-user subscription |
|
How you pay |
Per document, or from a pack of credits |
Per user, per month or year |
|
Adding team members |
No extra cost |
Usually each sender needs a paid seat |
|
Quiet months |
Little or nothing spent |
The fixed cost continues |
|
Busy months |
Cost rises with volume |
A fixed allowance, which may need a higher plan if you exceed it |
|
Best for |
Uneven or growing volume |
Steady, high volume from a fixed team |
For the wider picture on paying for software you do not use, see our data study, UK SMEs Are Wasting Millions on Software Subscriptions.
Who benefits most from pay-as-you-go e-signatures
Pay-as-you-go tends to work best for:
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Businesses with seasonal or uneven signing volume, where a fixed monthly cost pays for capacity that sits unused in quiet periods.
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Small teams where several people send documents occasionally, because paying per seat adds up quickly when nobody sends many.
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Growing businesses that do not want to revisit their plan every time headcount changes.
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Developers adding signing to a product, where per-user pricing makes little sense. Inkless has no separate API usage fee, and you can read more on our eSignature API and integrations page.
A subscription can still win. If you send a high, steady volume every month, a bundle with a lower per-document rate may cost less overall. Inkless offers both packs and 12-month subscriptions for that reason. The Pricing page has the current plans.
What to check before you choose a pay-as-you-go provider
A low headline price means little if the terms add costs later. Ask these questions before you commit:
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Is it charged per document or per envelope? One envelope can hold several documents, so the two can produce very different bills.
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Do credits expire? Expiring credits turn a flexible model back into a use-it-or-lose-it one.
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Are there per-user or per-seat fees? True pay-as-you-go pricing should not charge for users.
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Is API access charged separately? This matters if you plan to automate sending.
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Are identity checks and other extras charged separately? At Inkless, identity verification can be switched on for individual recipients and is charged separately from document credits.
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Does the price include VAT, and what comes with every document? Check that an audit trail, reminders and templates are included rather than sold as add-ons.
How Inkless pricing works
Inkless charges for documents sent. There are no sign-up fees, no per-user fees and no separate API usage fees. You can buy a pack of documents and use them as you need, or choose a 12-month subscription for a lower per-document rate if your volume is steady.
Supporting document requests are built into the signing workflow, so you can ask recipients for evidence such as proof of address before they complete signing. Every signed document includes a tamper-evident audit trail. For the steps from upload to signed PDF, see how to sign contracts online with Inkless, and for a named comparison with another UK provider, read Inkless vs Signable.
Frequently asked questions
What is a pay-as-you-go e-signature?
A pay-as-you-go e-signature service charges for the documents you send rather than a fixed fee per user. You buy credits or pay per document, and each send uses them. This suits businesses with uneven volume, because quiet months cost little and you are not paying for unused seats.
Is pay-as-you-go e-signing cheaper than a subscription?
It depends on your volume. Pay-as-you-go usually costs less when you send documents occasionally or when volume changes month to month. A subscription can cost less if you send a high, steady number of documents. Compare your expected monthly volume against each provider's current plans before choosing.
Do pay-as-you-go e-signatures have the same legal standing?
Yes. How you pay has no effect on whether an electronic signature is valid. UK law looks at the signer's intent, the type of document and the evidence of who signed. Choose a provider that records an audit trail, and read our UK e-signature compliance hub for the legal background.
Can I add team members without paying more?
With Inkless, yes. There are no per-user fees, so you can add colleagues as your team grows and pay only for the documents sent. Check any other provider's terms for seat charges before you commit, because many price by user.
Key takeaways
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Pay-as-you-go e-signatures charge for documents sent, not for the people who send them.
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They suit uneven or growing volume, and a subscription can suit steady, high volume.
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Check whether pricing is per document or per envelope, whether credits expire, and whether users, API access or extras cost more.
Next step
See what you would pay for the documents you actually send. View Inkless pricing, or start with 10 free documents, no credit card required.