Finance & compliance
Micro-B2B Receivables Autopilot
Flat-rate overdue-invoice follow-up for micro and small B2B businesses that Chaser, Kolleno and Upflow price out.
Founder thesis
The incumbents left the bottom of the market open. Kolleno's self-serve plan needs over $1M turnover at $650 per user per month, Upflow's paid plans are quote-only, and Chaser's cheapest plan is $259/mo for 4 users. Bill one flat $19-29/mo for unlimited invoices and seats, and the free built-in reminders from Stripe, QuickBooks and Xero become the thing to beat.
What others got wrong
Kolleno gates self-serve at more than $1M turnover and $650 per user/month, so a freelancer or sub-$1M B2B has no self-serve collections product at all.
Chaser's cheapest plan is $259/mo but caps at 4 users, with unlimited users starting at Core $779/mo, which prices the smallest businesses out.
Upflow's paid plans are quote-only and gated by gross invoiced value, and its only free plan is analytics with no collections workflow.
Existing AR platforms run basic standard-interval dunning with no strategy drawn from a customer's payment pattern, and legal or debt recovery has to leave the platform.
What should work
One flat price, target $19-29/mo, for unlimited invoices, sequences and seats instead of per-user pricing plus turnover gates.
Cadence that adapts to each customer's payment history, and follows up by SMS/WhatsApp, not email alone.
Two-way Stripe plus QuickBooks/Xero sync so setup is minutes and reminders run off live invoice data.
A free tier that pulls live invoice data in before anyone pays, the same wedge Upflow uses to keep its paid plans quote-only.
What kills it
- Free built-in reminders from Stripe, QuickBooks and Xero anchor the price at $0.
- Nobody has shown micro-B2B businesses will pay a monthly subscription instead of spreadsheets and WhatsApp.
- One HN commenter wrote that customers already ignored 3 Stripe reminders, so another automation may change nothing.
- Chaser, Upflow and Kolleno could reprice down at any time.
What users want
5A process that runs without me.
The Ask HN poster wrote chasing is manual, awkward, and nobody has a good system for it, and small businesses fall back on auto-reminders they hope work, hand-sent WhatsApp messages, or letting it slide.
Reminders that aren't ignored.
One HN commenter wrote the customer already ignored at least 3 reminders from Stripe's automated system, so automating just replaces one automation with another.
Dunning that reads the customer.
An AR founder wrote the incumbents only offer basic messaging in x days with no collection strategy based on a customer's payment pattern, though he was building a competitor and wrote it in 2024.
Automatic overdue reminders built in.
A FOSSBilling user asked whether reminder intervals exist or reminders can only be sent by hand.
Periodic automated follow-up.
An Invoice Ninja user asked whether periodic, automated follow-up reminders for unpaid invoices can be set up.
- Sources
- 14
- Checked
- 14
- Competitors
- 4
- Gaps
- 6
- Page checked
- 14 · 100%
- Snippet only
- 0 · 0%
- Documented
- 8 · 67%
- Interpreted
- 4 · 33%
- complaint6
- market4
- pricing3
- playbook1
Competitors
4Parsed from public pricing blurbs (entry paid tier when available). Max in set: $650/mo.
| Competitor | From | Free tier | Source |
|---|---|---|---|
| Chaser | $259/mo | Yes | chaserhq.com✓ |
| Kolleno | $650/mo | Yes | kolleno.com✓ |
| Upflow | $390/mo | Yes | upflow.io✓ |
| Stripe Invoicing (default incumbent) | Unverified | — | news.ycombinator.com✓ |
What customers complain about
6| Gap | Src |
|---|---|
Small firms use a spreadsheet plus hand-sent messages because the accounting auto-reminder gets ignored and nobody owns the process consistently. | |
Reminders from the default provider are already ignored, so another email automation changes nothing. | |
Existing AR platforms run basic standard-interval dunning with no strategy based on a customer's payment pattern, and legal or debt recovery has to leave the platform. The commenter who said this is an AR founder, so self-interested, and the thread is from 2024. | |
The paid incumbents are gated away from the smallest businesses: Kolleno's self-serve needs more than $1M turnover at $650 per user/month, Upflow's paid plans are quote-only, and Chaser's cheapest is $259/mo for 4 users. | |
Widely used open-source invoicing software does not run overdue reminders automatically. FOSSBilling and Invoice Ninja both carry open requests asking for it. | |
Nothing shows micro-B2B businesses will pay a monthly subscription instead of free built-in reminders, spreadsheets or WhatsApp, and the free incumbents anchor the price at $0. |
Documented Interpreted
How competitors find customers
3| Tactic | Src |
|---|---|
| Partner with accountants and bookkeepers who refer the tool into their SMB clients. Chaser runs this as a formal program with a Partner Central template pack and reports over 10,000 users. | chaserhq.com✓ |
| A bottom-up free tier plus public review proof: Upflow gives a free-forever AR-analytics plan and shows a 4.9/5 rating from 200+ G2 reviews. | upflow.io✓ |
| Demand-testing on Hacker News before building. The Ask HN thread on handling clients who don't pay on time (39 points, 50 comments) is an AR founder mining the exact workflow from operators, a repeatable way to recruit design partners, though it produced no signup metric. | news.ycombinator.com✓ |
Your angle & pricing wedge
| Piece | Claim | Src |
|---|---|---|
| Angle | A flat-priced collections autopilot for businesses the incumbents gate out: connect Stripe and QuickBooks/Xero, then run multi-channel follow-up (email plus SMS/WhatsApp) whose cadence adapts to each customer's payment history, with a per-customer workspace and payment links, unlimited invoices and seats on one flat price, plus a free tier. Multi-channel collections and AI agents already ship from Chaser, Upflow and Kolleno, so this is a price-and-segment wedge with workflow quality as the differentiator, not a new capability. | |
| Wedge | Charge one flat price per business, target $19-29/mo, for unlimited invoices, sequences and seats instead of per-user pricing plus turnover gates, and delivery is cheap: Amazon SES outbound email is $0.10 per 1,000 emails and Twilio US outbound SMS is $0.0083 per segment, so 2,000 emails and 200 SMS in a month is under $2. Buyers switching is unproven, incumbents could reprice down, and free Stripe, QuickBooks and Xero reminders anchor the price at $0. |
How others got traction
3| Move | Why | Src |
|---|---|---|
| Chaser runs an accountant and bookkeeper partner program as a referral channel, including a Partner Central pack of free marketing templates and guides. | One accounting firm reaches dozens of SMB ledgers at once and lends trust cold outreach cannot, which is why the same channel shows up at other vendors. | chaserhq.com✓ |
| Upflow gives away a free-forever analytics tier, Discover, that shows AR health and benchmarks without the paid collections workflow. | The free tier gets live invoice data in before a finance team pays, which lets its plans stay quote-only, though no published conversion rate proves the effect. | upflow.io✓ |
| Upflow rebuilt its product and site around AI agents, shipping a first-party MCP server for Claude, ChatGPT and Copilot and a public Claude Skills Library. | Publishing agent skills is a new top-of-funnel for finance teams already inside Claude or ChatGPT, but Upflow ties no signup metric to it. | upflow.io✓ |
Market heat
Chaser's pricing page says over 10,000 users worldwide rely on Chaser to get paid faster, protect cash flow and keep good customer relationships.
Chaser's partner page says it is SOC 2 Type II certified and carries a 4.9/5 rating.
Kolleno sells enterprise collections at $650 per user/month and $1,245 per user/month, with minimum user counts of 1-4 and turnover gates of more than $1M, $10M and $100M.
More ▾Upflow reports 28 customer stories, including 85% of follow-up emails processed automatically and a 68% drop in invoices 31+ days overdue from Nov 2023 to Nov 2024, and lists a first-party MCP server across Claude, ChatGPT and Copilot.
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Revenue signals
4| Signal | Src |
|---|---|
Chaser: self-reported over 10,000 users worldwide, a 4.9/5 rating and SOC 2 Type II. No MRR or ARR is published, and it is company-reported. | chaserhq.com✓ |
Kolleno: self-reported outcomes on its pricing page, including Drata driving down past-due balances by 96% for 100+ users, another case at 31% fewer overdue invoices, 29% lower median days late, and over 20 hours saved each week. Vendor case studies, not audited revenue. | kolleno.com✓ |
Upflow: self-reported outcomes, including 85% of follow-up emails processed automatically, a 68% drop in invoices 31+ days overdue from Nov 2023 to Nov 2024, 75% less time on cash collection, and a 4.9/5 rating from 200+ G2 reviews. No revenue disclosed. | upflow.io✓ |
Category pricing: Chaser's self-serve floor is $259/mo for 4 users ($779/mo for unlimited), Kolleno's self-serve BusinessPay is $650 per user/month, and Upflow's paid plans are quote-only with a $390/mo payments platform fee. Whether a flat $19-29/mo entrant wins the sub-$1M-turnover segment is untested, and free built-in reminders anchor that segment at $0. | chaserhq.com✓ |
Should you build this?
The category makes money and the pain is documented, but this is a crowded space where the cheap flat-rate wedge is unproven. Kolleno sells at $650-$1,245 per user/month with turnover gates, Chaser self-reports over 10,000 users with SOC 2 Type II, and Upflow reports 28 customer stories with hard metrics like a 68% drop in invoices 31+ days overdue. The complaints are real: the Ask HN poster says chasing is manual and awkward with no good system, one commenter says customers already ignored 3 Stripe reminders, and FOSSBilling and Invoice Ninja users ask for automatic reminder intervals that do not exist. The problem is that this is not a new category. Chaser, Upflow and Kolleno already ship multi-channel collections and AI agents, Upflow gives analytics away, and free reminders anchor the price at $0, so the plan can only win on price and segment focus, which nobody has validated. Before building, recruit 25 B2B businesses under $1M revenue that invoice through Stripe, QuickBooks or Xero and chase late payers by hand, collect 90 days of overdue dollars, and offer a paid annual pre-order at $19/mo for unlimited invoices and seats, then kill it if fewer than 6 of 25 pre-pay or more than half say the built-in reminders plus occasional manual messages are good enough.
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All sources
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