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FIXnotes

Paperstac vs FIXnotes

Best for note sellers & brokersBest for active investors

Paperstac serves note sellers and brokers who need transfer logistics; FIXnotes is built for active investors who want research tools alongside listings.

Updated April 2026

FeatureFIXnotesPaperstac
Marketplace
Live Note Marketplace
Buyer Qualification Flow
Deal Calculator
Investor Tools
Due Diligence Tools
API Access
Education & Community
Knowledge Base
Community Chat
Access & Pricing
Free to Browse
Seller Tools
Platform
Mobile Usable
Yes No Partial Not verified
  1. Paperstac facilitates note transfers but does not provide integrated DD tooling.
  2. Paperstac's mobile experience is functional but not fully optimized for note research workflows.

Marketplace & Deal Quality

Both FIXnotes and Paperstac list mortgage notes for sale, but the platforms optimize for different participants. FIXnotes is buyer-first: listings are structured to surface the data a buyer needs to underwrite — property state, loan position, UPB, and performance status. Paperstac's marketplace has historically leaned toward the seller workflow, with note transfer and closing infrastructure as the primary product.

Investor Tools & Analytics

FIXnotes includes a built-in deal calculator and due diligence tooling accessible without a paid tier. Paperstac does not offer yield calculators or DD infrastructure — investors using Paperstac bring their own underwriting process.

Knowledge Base & Community

FIXnotes maintains a free Knowledge Base covering note investing fundamentals, deal evaluation, and market mechanics. A standing Community Chat is included as a benefit at every membership tier. Paperstac does not offer educational content or community programming.

Pricing & Access

FIXnotes allows browsing the active note marketplace without creating an account. Paperstac requires registration to view listings. FIXnotes membership tiers unlock research tools and resources; the marketplace itself is open.

Support & Trust

FIXnotes is operated by Robert Hytha, a practicing note investor, and publishes transparent market data through the FIXnotes Market Index. Paperstac has an established track record in the note transfer space. Both platforms have a public presence in the secondary mortgage note community.

Who is Paperstac best for?

Paperstac is structured primarily around note sellers and brokers who want a streamlined transfer workflow. Its closing and escrow-adjacent tooling makes it a reasonable fit for note brokers who close frequent transactions and prioritize transfer logistics over buyer research infrastructure.

  • Note brokers managing recurring seller clients
  • Sellers prioritizing a clean listing and transfer process
  • Investors already underwriting independently who want a lightweight transaction layer

Who is FIXnotes best for?

FIXnotes is designed for the active note investor who wants to research, underwrite, and acquire mortgage notes through a single platform. The buyer qualification flow, deal calculator, and Knowledge Base are included at every tier — no paywall on the research tools.

  • Active buyers underwriting performing and non-performing notes
  • Investors who want deal analysis tools alongside listings
  • Note investors at any experience level building a research habit

Frequently Asked Questions

Is Paperstac free to use?
As of April 2026, Paperstac requires registration to access its marketplace. Free browsing without an account is not available — buyers must create an account before viewing note details or contacting sellers. FIXnotes allows open marketplace access without any registration.
What does Paperstac offer that FIXnotes doesn't?
Paperstac is built around note transfer logistics and closing infrastructure, which FIXnotes does not replicate. The platform has an established seller network and handles document workflows for note closings. Investors who manage high-frequency closings with multiple seller clients may find Paperstac's transfer tools useful.
Is FIXnotes better than Paperstac?
For active buyers, FIXnotes provides a more complete research environment — buyer qualification, deal calculator, and Knowledge Base are included at no cost. Paperstac is stronger on the seller and transfer side. The right choice depends on whether you prioritize buy-side research tools or seller logistics.
Which platform is better for buying mortgage notes?
FIXnotes is purpose-built for buyers — it integrates due diligence tools, a deal calculator, and buyer qualification directly into the marketplace. Paperstac focuses on note transfer logistics without those buyer-facing tools. Buyers who want to research and underwrite inside the platform will find FIXnotes the more complete option.
Does Paperstac have a free trial?
As of April 2026, Paperstac does not offer a free trial period. Account registration is required before accessing listings. FIXnotes offers free and open marketplace access without a trial structure — the core platform, Knowledge Base, and Community Chat are available without a time limit or payment commitment.

Ready to explore the marketplace?

FIXnotes is free to join — no commitment needed.