A research agenda, not completed reporting. These are the original topic questions and leads. Named companies, dates and outcomes require verification. Editorial operations and internal schemas remain private.

2. Neobanks and digital banks

2.1 Definitions and models

  • Non-bank fintech with partner bank (U.S. typical model)
  • Chartered digital bank (national bank, state bank, ILC)
  • E-money institution vs. full bank (UK/EU), including the UK "mobilisation" restricted licence phase
  • Digital subsidiaries of incumbents (e.g., Marcus by Goldman Sachs consumer retreat — verify; JPMorgan Chase UK; Openbank by Santander in the U.S. — verify)

2.2 Company profiles (seed list — verify)

For each: licenses and partner banks; products; fee schedule; APY history; defined customer metrics; revenue mix (interchange vs. NII vs. lending vs. subscription); profitability; enforcement; outages; complaint volume; geographic availability.

  • U.S.: Chime (IPO June 2025 — verify; partner banks The Bancorp and Stride — verify; stated bank-charter plans — verify), Varo Bank (national charter 2020; capital raises; leadership changes — verify), SoFi (acquired Golden Pacific Bancorp 2022), Current, Dave (partner bank; DOJ/FTC suit — verify), MoneyLion (acquired by Gen Digital — verify), Aspiration (fraud charges against co-founder — verify), One, Albert, Step, Greenlight, Cash App banking features (Block; Square Financial Services ILC), PayPal and Venmo debit/savings, Apple Savings (Goldman — verify transition), Revolut U.S. (verify charter plans), Monzo U.S. (verify), Nubank U.S. (OCC application — verify), Mercury (business; OCC charter application — verify), Novo, Found, Lili, Bluevine (business), Relay
  • UK: Monzo (profitability; FCA fine 2025 — verify), Starling (FCA fine October 2024 — verify; Engine BaaS), Revolut (UK banking licence with restrictions July 2024; exit from mobilisation — verify), Chase UK, Kroo, Zopa Bank, OakNorth, Atom, Allica
  • EU: N26 (BaFin growth restrictions and lifting; 2025 governance issues — verify), bunq (U.S. broker-dealer/charter ambitions — verify), Revolut Bank UAB (Lithuania), Qonto, Trade Republic (bank licence), Vivid
  • Latin America: Nubank (Brazil, Mexico banking licence, Colombia — verify), Inter&Co, C6, PicPay, Mercado Pago bank licence applications (verify), Ualá
  • Asia-Pacific and other: KakaoBank, Toss Bank, WeBank, Hong Kong virtual banks (ZA Bank, Mox, Airstar — verify profitability), Singapore digital banks (GXS, Trust, MariBank, ANEXT, Green Link — verify), Tyme/GoTyme, Judo Bank, Australian neobank exits (Xinja 2020, Volt 2022 — verify)

2.3 Neobank economics

  • Durbin-exempt debit interchange as primary revenue; why partner banks under $10B in assets matter
  • Early wage access/"get paid early" (ACH early posting) and fee-free overdraft alternatives (e.g., SpotMe — verify structure)
  • Deposit growth vs. deposit stability; high-yield savings wars and rate sensitivity (2022–2025)
  • Profitability milestones and definitions (adjusted vs. GAAP)
  • Customer support and account freezes: complaints about closures under BSA/AML obligations; evidence from CFPB database and reporting

3. How BaaS works

3.1 Structural diagram and roles

  • Sponsor bank: holds charter, deposits, card issuing (BIN sponsor), compliance responsibility
  • Middleware/BaaS platforms: API layer, ledgering, compliance tooling (Unit, Treasury Prime, Synctera, Synapse [bankrupt], Bond [acquired by FIS], Rize [acquired by Fifth Third], Solid [bankrupt — verify], Increase, Column as bank-platform, Galileo, Marqeta, Lithic, Highnote — verify each)
  • Program manager/fintech brand: customer experience, marketing, sometimes first-line compliance
  • Processors and card networks
  • Direct vs. middleware-intermediated sponsor models; trend toward direct bank relationships after 2024

3.2 FBO accounts and ledgering

  • For-benefit-of (custodial) omnibus accounts; sub-ledgers; who maintains the "book of record"
  • Daily reconciliation between bank ledger, middleware ledger, and fintech ledger
  • Failure modes: ledger drift, commingling, missing records, negative balances, suspense accounts
  • FDIC proposed rule on recordkeeping for custodial accounts with transactional features (September 2024 — verify final status or withdrawal)

3.3 Deposit insurance and pass-through coverage

  • FDIC pass-through requirements (12 CFR 330.5 and 330.7 — verify): custodial relationship disclosed in bank records, identities and interests ascertainable, deposits owned by principals
  • What pass-through does not protect: fintech insolvency, ledger failure, fraud by the intermediary, non-deposit products, crypto
  • FDIC Part 328 amendments on signage and misrepresentation of insurance (final rule December 2023; compliance dates extended — verify) and enforcement letters to fintechs for misleading FDIC claims
  • NCUA share insurance equivalents
  • UK/EU: FSCS for banks vs. safeguarding for EMIs; FCA safeguarding regime changes (CASS-style rules for payments firms — verify effective date, 2026); EU deposit guarantee schemes
  • Brokerage cash sweep programs and SIPC vs. FDIC (link to Part 07)

4. The Synapse collapse (special investigation)

Build a fully sourced case study; every item below is a lead to verify:

  • Synapse Financial Technologies: business model, bank partners (Evolve, AMG National Trust, Lineage, American Bank — verify), fintech clients (Yotta, Juno, Copper, Mainvest and others — verify)
  • Dispute with Evolve and the Mercury migration (2023) as precursor
  • Chapter 11 filing (April 2024) and conversion/trustee appointment; attempted sale to TabaPay collapse (verify)
  • Freezing of end-user accounts (May 2024) and the reported shortfall between ledger balances and bank-held funds (estimates of $65–$96 million — verify trustee figures and dates)
  • Partial disbursements by banks; the FDIC's position that pass-through coverage did not apply because no bank failed
  • CFPB actions: complaint against Synapse and proposed use of the Civil Penalty Fund for victims (verify outcome and amounts); congressional inquiries
  • Federal Reserve enforcement against Evolve (June 2024 — verify); Evolve's 2024 data breach (LockBit — verify)
  • Lawsuits by end users and fintechs (verify)
  • Status as of the research date: amounts returned, amounts still missing, remaining litigation
  • Lessons: reconciliation, direct bank recordkeeping, disclosures, regulatory gaps
  • Timeline with source for each date

5. BaaS enforcement wave

Build enforcement records (seed list — verify each, including termination dates):

  • Blue Ridge Bank (OCC 2022, 2024), Metropolitan Commercial Bank (Fed/NYDFS 2023 — verify), Cross River Bank (FDIC 2023), Lineage Bank (FDIC January 2024), Sutton Bank (FDIC February 2024), Piermont Bank (FDIC February 2024), Thread Bank (FDIC May 2024), Evolve Bank & Trust (Federal Reserve June 2024), Choice Financial Group (FDIC — verify), Patriot Bank (verify), Pathward (verify prior orders), Lead Bank (verify), Green Dot (Federal Reserve 2024 — verify), Columbia/Umpqua, others
  • Common themes: third-party risk management, BSA/AML, consumer compliance, growth restrictions requiring prior approval for new partners
  • Interagency Guidance on Third-Party Relationships (June 2023), the July 2024 joint statement and RFI on bank-fintech arrangements (verify), OCC Bulletin updates
  • 2025–2026 shift: terminations of orders, changes in supervisory approach, removal of "reputational risk," debanking executive order (August 2025 — verify), brokered-deposit rule proposal withdrawal (verify)
  • Consequences: fintech offboardings, sponsor-bank exits from BaaS, consolidation, program migrations

6. Embedded finance

  • Categories: embedded payments, accounts, cards, lending, insurance, payroll/EWA in vertical software and marketplaces
  • Examples (verify): Shopify Balance, Toast Capital, Uber Pro Card, Lyft Direct, DoorDash Crimson, Amazon seller lending, Walmart's OnePay
  • Unit economics: interchange share, float share, lending revenue share, program costs, compliance cost, fraud losses
  • Revenue-share structures between sponsor bank, BaaS provider, and brand (verify any disclosed terms)
  • Build vs. partner vs. buy analysis for software companies
  • Evidence on attach rates and revenue uplift (filings > vendor reports)

7. Charters: fintechs becoming banks

7.1 Charter types

  • National bank (OCC), state member/non-member bank, industrial loan company (Utah, Nevada), national trust bank, state trust company, special purpose national bank "fintech charter" (OCC 2018 policy; Lacewell v. OCC litigation — verify outcome), Wyoming SPDI, Connecticut innovation bank, Georgia merchant acquirer limited purpose bank (verify)
  • Timelines, capital requirements, business plan conditions, CRA, holding-company implications

7.2 Charter tracker (seed list — verify status: applied, conditionally approved, approved/opened, withdrawn, denied)

  • Approved/opened (historic context): Varo (2020), Jiko (bank acquisition), SoFi (via acquisition), LendingClub (acquired Radius 2021), Square Financial Services (ILC 2021), Nelnet Bank (ILC), Grasshopper
  • 2025–2026 applications and approvals (verify all): Mercury (OCC national bank), Nubank (OCC national bank — verify conditional approval), Revolut (verify), Coinbase (national trust), Circle (First National Digital Currency Bank — verify), Ripple (national trust), Paxos (conversion — verify), Bridge/Stripe (national trust — verify), Wise (national trust — verify), Crypto.com, BitGo, Fidelity Digital Assets (verify), Stripe (Georgia MALPB — verify), GM Financial and Stellantis ILC applications (verify), Edward Jones ILC (verify), Affirm or other lenders (verify), Monzo (withdrew U.S. application 2021 — verify), Erebor Bank (verify)
  • Bank acquisitions by fintechs (verify): any 2024–2026 deals
  • Opposition and debates: bank trade groups on ILCs and trust charters, Congress, state regulators; OCC stance changes under new leadership (verify)
  • UK/EU: licence routes and notable approvals

8. Evaluation protocols

8.1 "Who holds your money?" verification protocol

  1. Find the legal disclaimer in the app/website footer and the account agreement.
  2. Identify the bank of record; confirm on FDIC BankFind or NCUA locator.
  3. Identify intermediaries (program manager, BaaS middleware, custodian).
  4. Determine account type (deposit account in customer's name, FBO sub-account, e-money, brokerage sweep, prepaid).
  5. Check pass-through conditions described in the agreement.
  6. Check sponsor bank enforcement history (FDIC/OCC/Fed search).
  7. Check the fintech's complaint history and any state regulator actions.
  8. Record findings in product record with confidence.

8.2 Sponsor bank risk scorecard

Criteria (define and justify weights): enforcement history, concentration of BaaS deposits vs. total deposits (from Call Reports where identifiable), capital ratios, growth rate, number of programs, middleware dependence, disclosure quality. Present as a research framework, not a safety rating.

9. Workflows

Use the master workflow format for:

  • Choosing a checking or savings account: bank vs. neobank (neutral criteria)
  • Verifying FDIC/NCUA or FSCS coverage and pass-through conditions
  • What to do if a fintech app freezes your account or shuts down
  • Closing a fintech account and retrieving funds (including after a partner bank change)
  • Launching an embedded finance product (partner selection, compliance obligations, contract terms)
  • Preparing a fintech startup for a sponsor-bank partnership (due-diligence package)
  • Running vendor due diligence on a BaaS provider (for banks)

10. Timeline 2020–2026

  • Varo charter; SoFi and LendingClub bank acquisitions
  • 2022–2024 consent orders by bank and date
  • SVB failure effects on fintech deposits (March 2023)
  • Synapse–Evolve–Mercury dispute; Synapse bankruptcy; freezes; trustee reports; CFPB actions
  • Interagency third-party guidance and RFI
  • FDIC signage and custodial recordkeeping rules
  • Neobank IPOs and profitability milestones
  • 2025–2026 charter application wave and approvals
  • UK/EU licence milestones (Revolut, Monzo, N26)