Plastiq, which lets consumers and SMBs use credit cards to pay for anything, raises $75M Series D round led by B Capital Group, bringing total raised to $140M+
Natasha Mascarenhas / TechCrunch :
Context & Ripple Effects
Plastiq's $75M Series D lands in a payments-infrastructure funding arc the corpus has tracked before: Marqeta's $45M Series D in 2018 and Plaid's $425M Series D at a reported ~$13.4B valuation in 2021 both showed late-stage capital piling into the rails beneath card-based payments. Plastiq's angle — letting consumers and SMBs put anything on a credit card — targets the same spend volume from the payer side.
The round also sets up a later test: two years on, Plastiq took a SPAC merger at a ~$480M valuation with CEO Eliot Buchanan staying on, a public-market mark far below the fintech mega-valuations of the same era. Meanwhile Berlin's Pliant kept raising against the adjacent corporate-card-and-accounting-software niche across 2021-2025, showing the B2B card spend category stayed contested.
First-order effects
- Plastiq gains $75M led by B Capital Group to scale card acceptance for rent, suppliers, and other payees who don't take plastic, with SMBs the named beneficiary.
- B Capital Group secures a position in B2B card-payments infrastructure at a point where Plastiq's total raised crosses $140M.
Second-order effects
- Rivals in corporate card spend management — the space Pliant later funded repeatedly — face a competitor with fresh capital to bundle credit access with payment acceptance.
- Card networks and processors gain transaction volume as more SMB obligations migrate onto credit rails, strengthening the case for card-based B2B spend products over checks and ACH.
Third-order effects
- If the pattern holds, B2B payments consolidates around card infrastructure, but the corpus's later data point — Plastiq's ~$480M SPAC valuation — suggests Series D scale doesn't guarantee public-market pricing on par with peers like Plaid.
- SMBs increasingly access credit through payment platforms rather than traditional lenders, shifting underwriting power toward the software layer that routes the spend.
The trend: B2B payments is migrating onto card rails, with late-stage rounds funding payer-side platforms whose public-market outcomes — as Plastiq's own SPAC later showed — can diverge sharply from private-era fintech valuations.