- Back-to-back escrow
- Backup withholding
- Balance sheet
- Balance transfer
- Balanced fund
- Balloon mortgage
- Balloon payment
- Bank card
- Bank holding company
- Bank Secrecy Act
- Bank spread
- Bankruptcy
- Bankruptcy code
- Bankruptcy trustee
- Bargain sale
- Base price
- Bearing wall
- Beneficiary
- Benefit package
- Bequest
- Beta
- Betterment
- Bidding war
- Biennial ownership
- Bill of sale
- Bill presentment
- Billing address
- Billing cycle
- Billing statement
- Binder
- Bitcoin
- Black Monday
- Blanket insurance
- Blanket mortgage
- Blend fund
- Block tuition
- Blockchain
- Blue-ribbon condition
- Board certified
- Board eligible
- Board of equalization
- Bodily injury liability
- Bond
- Bond fund
- Book value
- Borrow pit
- Boundary
- Breach of contract
- Breach of covenant
- Breach of warranty