Best Late Invoice Collection Agencies, AR Software and Outsourced AR Services 2026

Your invoice is overdue. You have already sent the reminder. Your client says finance is handling it. The money still has not arrived.

At that point there are several ways to solve the problem:

• keep chasing it yourself;

• automate reminders with accounts receivable software;

• outsource accounts receivable management;

• hire an invoice recovery specialist;

• or hand the debt to a traditional collection agency.

They are not interchangeable. The right choice depends on how overdue the invoice is, whether the client relationship still matters, how much human judgment the situation requires, and whether you need somebody to actually take ownership of the follow-up.

This guide compares Collected42 with some of the closest alternatives, including Recovo, Clarity One, The Receivables Agency, Chaser, Upflow and traditional B2B debt collection services.

Quick comparison

Pricing and services change, so check each provider directly before choosing.

1. Collected42: best for high-value invoices where the client relationship still matters

Collected42 is built around a fairly specific problem:

The work has been done, the invoice is valid, but getting the client to actually pay now requires persistent, intelligent follow-up.

That makes it different from both invoice-reminder software and conventional debt collection. The focus is not simply to send another overdue notice. It is figuring out:

• whether the invoice has actually been approved;

• who owns it internally;

• whether procurement is blocking it;

• whether a PO or document is missing;

• which payment run it has been placed into;

• what payment date has actually been committed to;

• and when the situation needs to be escalated.

Those are the same seven checkpoints described in why clients pay late.

Best for

Collected42 makes the most sense for creative and marketing agencies, design studios, development agencies, cybersecurity consultancies, fractional teams, boutique consultancies and other B2B professional-service firms — particularly when invoice volume is relatively low but individual invoices are worth enough that one delayed payment matters.

Where Collected42 is different

The service sits between AR automation and formal debt collection. Instead of automating reminders or immediately treating the client as a debtor, Collected42 acts as an additional senior layer of payment operations. The aim is to own the receivable until there is a concrete resolution.

2. Collected42 vs Recovo

Recovo is probably the closest direct competitor in this comparison. It specifically targets marketing and creative agencies and describes its service as late-invoice recovery rather than traditional collections.

Its process is straightforward: the agency uploads overdue invoices, Recovo handles escalating outreach, and the client pays the agency directly. Recovo currently advertises a 20% contingency fee on successfully recovered invoices.

That makes the economics quite different from a fixed-price AR service. For example, if a $20,000 invoice is recovered, 20% is $4,000. That may be perfectly reasonable for a difficult invoice that otherwise would never have been recovered. But it is expensive if the invoice simply needed persistent professional follow-up.

Where Recovo is strong

• specifically built for agencies;

• no upfront recovery fee;

• handles the chasing rather than giving the agency more software;

• explicitly focuses on preserving the client relationship;

• and is easy to understand: upload invoice, they chase, you get paid.

Where Collected42 may make more sense

Collected42 is better suited when you want ongoing payment operations rather than contingency-based recovery. The distinction is:

Recovo: “Give us this overdue invoice to recover.” Collected42: “Let us take ownership of payment follow-up so invoices do not keep reaching the recovery stage.”

For an agency with recurring $5,000–$30,000 invoices, that can produce very different economics.

3. Collected42 vs Clarity One

Clarity One is closer to traditional outsourced accounts receivable management. Its proposition is a senior credit manager without hiring one internally. It provides structured invoice follow-up, debtor communication and reporting, and says its service starts at approximately EUR 290/month for up to 30 debtors, with higher-volume tiers rising to around EUR 490, EUR 790 and EUR 1,290 per month.

That is a strong model. In fact, Clarity One validates an important part of the Collected42 thesis: companies may want an experienced human managing payment conversations without adding full-time finance headcount.

Where Clarity One is strong

• a dedicated senior credit manager;

• French and English communication;

• structured follow-up;

• reporting;

• white-label options;

• and flat monthly pricing rather than a percentage of collected invoices.

The main difference

Clarity One is fundamentally positioned around credit management for SMEs. Collected42 is narrower. It is designed around the realities of B2B client-service businesses, where payment problems are often entangled with an ongoing project, client satisfaction, renewals, account relationships, procurement, change requests, SOWs, milestones and senior stakeholders.

That specialisation matters. A EUR 12,000 overdue agency invoice is not always simply a debtor-management problem. Sometimes it is a client-management problem with a payment component.

Best choice

Choose Clarity One if you need a broader outsourced credit-control function covering a significant debtor portfolio. Choose Collected42 if you have fewer, higher-value B2B relationships and want senior handling of the payment conversation itself.

4. Collected42 vs The Receivables Agency

The Receivables Agency offers one of the broadest human AR services in this comparison. It positions itself as an extension of a company’s internal accounting department and provides current invoice follow-up, past-due AR management, full outsourced AR, white-label AR, contingency recovery, reporting and analytics, dispute handling and payment-commitment tracking.

The company currently advertises a 97% recovery rate on targeted balances and a 32-day average resolution time, although those are the provider’s own reported figures rather than independently verified benchmarks.

Where it is strong

If you want something close to an outsourced AR department, this is a credible option. It can handle much more infrastructure than simply chasing a handful of overdue invoices, and it operates under the client’s identity with explicitly relationship-first communication.

Where Collected42 differs

The Receivables Agency is broader. Collected42’s advantage should be specialisation and senior attention, rather than trying to replicate a full accounting department.

For an agency with eight client accounts and $45,000 currently outstanding, you do not necessarily need an outsourced AR department. You need someone who understands each account and knows what to do next.

5. Collected42 vs Chaser

Chaser represents a different category altogether. It is primarily accounts receivable automation software. Businesses use it to create structured reminder workflows, track receivables and automate repetitive follow-up. Its current published pricing starts around GBP 199/month for Compact, GBP 599/month for Core, and GBP 899/month for Complete, with equivalent euro and dollar prices varying by plan and billing choice.

This can be extremely useful:

If your problem is “we have 300 invoices and our finance team cannot manually remind everybody,” software is probably the better solution.

But there is an important limitation

Software is very good at answering: when should another reminder be sent? It is less good at answering:

The CFO promised payment last Friday, procurement now says they don’t have the right PO, our account manager doesn’t want us to push too hard because renewal discussions start next week — what do we do?

That requires context. It is the same argument set out in our guide to unpaid invoice collection services.

Chaser also offers humans

This comparison is no longer simply “software versus people.” Chaser now offers Care, an add-on involving a dedicated AR specialist who can manage payment follow-ups, phone calls, inboxes and payment queries. Its Compact + Care package currently starts around GBP 899/month, EUR 1,049/month or $1,199/month depending on market. That makes Chaser a much more serious competitor to human AR services.

Collected42 vs Chaser

Use Chaser if you have significant invoice volume, automation is the main problem, your team wants dashboards and workflows, and most receivables are relatively standardised. Use Collected42 if invoice count is lower, invoice values are relatively high, client relationships are sensitive, situations regularly require interpretation, and you want someone else to own the conversation.

6. Collected42 vs Upflow

Upflow is another major AR platform, but its positioning leans more toward finance teams that want analytics, automation and systematic cash collection. Its current product tiers include a free analytics-oriented offering alongside Grow, Scale and Strategic plans. Paid pricing is not publicly displayed and requires talking to the company.

Upflow is designed around building a more sophisticated AR operation: visibility into receivables, cash-flow analysis, structured customer engagement, automation and finance-team workflows.

Where Upflow wins

For a $20M SaaS company with a finance team and hundreds of customers, Upflow is closer to the problem.

Where Collected42 wins

Collected42 should not try to be a platform. Its advantage is precisely that a founder can effectively say:

“Here is what happened with this client. Please take it from here.”

For small agencies and professional-service companies, that simplicity can be much more valuable than another system to configure.

7. Collected42 vs DIY accounts receivable software

Chaser and Upflow are only two examples. There is now an increasingly large category of software designed to automate AR, with automated invoice reminders, aging dashboards, payment links, workflow sequences, promise-to-pay tracking, SMS or email communication, invoice segmentation and accounting-platform integrations. And software is getting cheaper and more capable.

That means you should seriously consider AR software if your biggest problem is volume.

600 invoices × routine follow-up = an automation problem. 6 invoices × $15,000 each × complicated client relationships = a judgment problem.

That distinction is more important than whether the technology uses AI.

The hidden cost of DIY AR software

Software reduces manual work. It does not remove responsibility. Someone still needs to configure the workflows, monitor replies, interpret disputes, decide when to escalate, chase internal client stakeholders, override automation when context changes, and deal with the uncomfortable cases.

So the correct comparison is not “software costs $259, while a human costs more.” It is software plus your team’s time versus outsourced ownership. For many companies, software wins. For founder-led service companies with relatively small AR portfolios, it may not.

8. Collected42 vs a traditional collection agency

Traditional collection agencies solve a different problem. You generally use them once the account has become sufficiently delinquent that ordinary commercial follow-up has failed.

Providers such as Atradius Collections operate on a recovery model where fees are generally charged as a percentage of amounts successfully collected. The precise fee can depend on factors such as debtor location and debt age, while legal proceedings can involve additional costs.

This can be appropriate when the debtor has stopped communicating, the debt is seriously overdue, ordinary escalation has failed, legal recovery may be required, or preserving the relationship is no longer the primary concern.

But most overdue invoices do not start there

Imagine a client says:

“Sorry — finance didn’t include this in Friday’s payment run. I’ve asked them to add it next week.”

That is not necessarily a collection-agency problem. The rational next step is usually to establish whether payment is approved, the exact next payment date, who owns it, and what happens if that date is missed. That is accounts receivable management, not formal debt recovery.

The escalation ladder

Invoice issued → normal reminder → human AR follow-up → specific payment commitment → senior escalation → formal notice → collection agency or legal recovery

Collected42 deliberately operates toward the middle of that ladder. The goal is to solve the payment problem before you need the bottom of it.

Which service should you choose?

Choose AR software if…

You have lots of invoices and the primary problem is sending consistent reminders. See Chaser or Upflow.

Choose a broad outsourced AR provider if…

You want somebody to operate a substantial part of your entire accounts receivable function. See Clarity One or The Receivables Agency.

Choose Recovo if…

You run an agency, already have overdue invoices and prefer a contingency recovery model with no upfront recovery fee. Recovo currently advertises a 20% recovery commission.

Choose a traditional collection agency if…

Commercial follow-up has essentially failed and you are ready for a formal recovery process. See Atradius Collections.

Choose Collected42 if…

You have a small number of relatively valuable B2B invoices, the client relationships still matter, and you want an experienced person — rather than another software workflow — to take payment follow-up off your plate.

That is especially relevant when you keep hearing “finance is processing it,” “accounting should pay next week,” “I’ve followed up internally,” “let me check” — and nobody is turning those updates into an actual payment date.

Collected42 is not a debt collection agency

And that distinction is intentional. We work earlier in the process. Our job is to find out:

• What’s actually blocking this invoice?

• Who owns the next action?

• What payment date has been committed to?

• Was that commitment met?

• Who should we escalate to if it wasn’t?

We handle that follow-up on behalf of agencies and other B2B service businesses, so founders and senior client teams don’t have to spend their time repeatedly chasing accounting departments.

If a debt has reached the point where formal collection or legal intervention is appropriate, we will tell you. But many overdue invoices should never have to get that far.

Frequently asked questions

What is the best alternative to a collection agency for an unpaid invoice?

If the client is still communicating and the invoice is not genuinely disputed, outsourced accounts receivable support may be a better first step. An AR provider can establish payment status, obtain commitments, follow up and escalate without immediately moving the account into formal debt recovery.

Is accounts receivable software enough to collect unpaid invoices?

For routine late invoices, often yes. AR software can automate reminders and dramatically improve consistency. It becomes less effective when the situation requires negotiation, interpretation, stakeholder management or customised escalation.

What is the difference between Collected42 and Recovo?

Both are aimed at solving overdue B2B payments without immediately using traditional debt collection. Recovo is particularly focused on invoice recovery for marketing and creative agencies and currently uses a 20% contingency model. Collected42 is positioned as ongoing senior payment-operations support rather than primarily contingency recovery.

What is the difference between Collected42 and Chaser?

Chaser is primarily an AR technology platform, although it also offers a human-operated Care service. Collected42 starts with the human service rather than the software layer.

When should I send an invoice to a collection agency?

Usually after normal AR follow-up and escalation have failed, particularly when the debtor has stopped cooperating or formal recovery is becoming necessary. There is no universal number of overdue days at which every invoice should automatically go to collections. The amount, dispute status, client relationship, jurisdiction and likelihood of recovery all matter.

Stop chasing invoices. Give somebody ownership of them.

The gap in many agencies isn’t invoicing. It isn’t bookkeeping either. It is ownership between sending the invoice and actually seeing the money in the bank.

Collected42 fills that gap:

follow-up → finance → procurement → payment commitment → missed commitment → escalation → resolution

So your founder, account manager or creative director does not have to. If you would rather run the process in-house, the payment operations wiki documents the whole method — and the follow-up templates cover every stage.

Have an overdue invoice now? Send us the invoice history and the client’s latest response and we’ll tell you what we’d do next.