Cheapest Dunning Tool for Bootstrapped SaaS
If you are bootstrapped, every dollar matters. Here is an honest side-by-side of dunning tool pricing, what you get at each price point, and how quickly each tool pays for itself.
$19/mo
SubRevival Starter
$99/mo
Stunning entry point
$199/mo
Churnkey minimum
$249/mo
Churn Buster minimum
Pricing table
Dunning tool pricing compared
Prices as of June 2026. MRR-scaled tools show approximate cost at $10K MRR and $50K MRR.
Estimated costs. Check each vendor for current pricing.
ROI at each price point
When does each tool pay for itself?
Assuming 9% monthly payment failure rate and 57% recovery rate with a dunning tool (versus ~0% without).
SubRevival
+$238/mo
Stunning
+$158/mo
Churnkey
−$loss
Churn Buster
−$loss
Winner: SubRevival only
SubRevival
+$494/mo
Stunning
+$393/mo
Churnkey
+$314/mo
Churn Buster
+$264/mo
Winner: SubRevival by far
SubRevival
+$2,516/mo
Stunning
+$2,315/mo
Churnkey
+$2,166/mo
Churn Buster
+$2,316/mo
Winner: All tools positive; SubRevival cheapest
What you get
Features at the entry price point
What does the cheapest plan at each tool actually include?
SubRevival $19/mo
- • Branded Day 1/3/7 emails from your domain
- • Hosted card update page
- • Instant retry on card update
- • Trial ending reminders
- • Renewal reminders
- • Recovery analytics
Stunning $99/mo
- • Email sequences
- • Customer portal
- • Basic analytics
- • No SDK required
Churnkey $199/mo
- • Email sequences
- • Cancel flow and churn surveys
- • AI-powered offers
- • SDK integration required
Churn Buster $249/mo
- • Email sequences
- • High deliverability focus
- • Card update page
- • Setup assistance
Verdict
The honest verdict for bootstrapped SaaS
For bootstrapped or early-stage SaaS under $50K MRR, the math is clear: SubRevival at $19/mo is the only dunning tool that is ROI-positive from sub-$5K MRR. Every other tool requires either $99/mo (Stunning) or $199/mo+ (Churnkey, Churn Buster) to get started.
The feature gap between SubRevival and Stunning at the entry level is small. Both send branded email sequences and have a card update flow. Stunning has more MRR-focused analytics and has been around longer, but at 5x the price for a bootstrapped business at $10K MRR, the cost difference is not justified.
Churnkey makes more sense at $100K+ MRR if you also have a meaningful voluntary churn problem you need cancel flows to address. Below that, you are paying $199/mo for features you will not use.
The most cost-effective dunning tool for bootstrapped SaaS.
SubRevival is $19/mo flat with full branded email sequences, card update page, and retry logic. No MRR tax as you grow.
FAQ
Cheapest dunning tool: FAQ
What is the cheapest dunning tool for Stripe?
SubRevival at $19/mo is the lowest-priced full-featured dunning tool for Stripe as of 2026. It includes branded email sequences, a card update page, instant retry on card update, trial reminders, and renewal reminders. The next cheapest options are Stunning at $99/mo and Churnkey at $199/mo minimum.
Is there a free dunning tool for Stripe?
There is no truly free full-featured dunning tool. Stripe's own Smart Retries is free and built-in, but it has no customer-facing component (no emails, no card update page). It recovers roughly 20-30% of failed payments. Adding a dunning tool with email sequences takes you to ~57% recovery. At $19/mo, SubRevival is the closest to free while still being a complete solution.
Can I build my own dunning system instead of paying for a tool?
Yes, but the hidden cost is significant. You need: a Stripe webhook listener, retry logic, transactional email setup (SES/Postmark/Resend), email templates, a card update page (Stripe Elements or Stripe-hosted), and monitoring to make sure emails are actually delivering. Realistic build time is 2-4 weeks for a developer. At $19/mo, SubRevival pays back vs. developer time within the first month.
Do dunning tools charge a percentage of recovered revenue?
Some do, some do not. Older tools like Stunning and Churnkey use MRR-scaled pricing, meaning your cost grows as your MRR grows. SubRevival uses flat-rate pricing ($19/$49/$149/mo), so the cost stays fixed regardless of how much revenue you recover. For growing businesses, flat-rate is significantly cheaper in the long run.
At what MRR does a dunning tool become ROI positive?
At $19/mo (SubRevival Starter), you break even at $333 MRR assuming you recover 57% of failed payments at a 9% failure rate. In practice, most SaaS businesses at even $2-3K MRR see positive ROI in the first month. The question is not whether a dunning tool is worth it — it is which tool to use.
What features should I expect from a budget dunning tool?
A good dunning tool at any price point should include: automated retry on card update, branded email sequences (at least Day 1/Day 3/Day 7), a hosted card update page, and basic reporting on recovery rates. Nice-to-have features at higher price points include trial ending reminders, renewal reminders, A/B testing email copy, and cancel flows.
Related guides
Start with the cheapest dunning tool that works.
SubRevival recovers failed Stripe payments at $19/mo flat with no code setup. 21-day money-back guarantee.