Four days for a one-week tenancy; qualifying online-payment-system failure adds five days for the affected period.
$5/day up to $50, or 5% of the delinquent rent payment / qualifying tenant share.
Or 15 days after written forwarding address, whichever is later.
Northland upheld PURA’s reading that §16-262e(c) bars estimated proportionate RUB recoupment of master-meter building-wide utility costs.
Connecticut charge guides
Security Deposit
Connecticut security deposit caps, 21-day return, forwarding-address timing, interest, escrow and itemization rules.
Open guide →21-Day Rule
How Connecticut’s 21-day deposit return and itemization deadline interacts with the forwarding-address rule.
Open guide →Deposit Limits
Connecticut generally caps residential security deposits at two months’ rent, reduced to one month for tenants age 62 or older.
Open guide →Forwarding Address
Connecticut gives landlords 15 days after receiving a written forwarding address when that date is later than the ordinary 21-day deadline.
Open guide →Interest & Escrow
Connecticut requires residential security deposits to be held in escrow and generally requires interest based on the state deposit index.
Open guide →Damage Itemization
Connecticut requires a written statement itemizing the nature and amount of damages when part of a security deposit is withheld.
Open guide →Deposit Remedies
Connecticut law provides a potential double-deposit civil liability for violations of the deposit-return subsection, with a narrower rule when only interest is missing.
Open guide →Utility Billing & Master-Meter RUB
Connecticut renter utility rules for master-meter RUB, individually metered service, PURA-approved submetering and the October 1, 2026 separate-meter lease rule.
Open guide →Rent Late Fees
Connecticut residential rent late-fee rules under §§ 47a-15a and 47a-4, including the nine-day/four-day grace period, lower-of cap and 2026 online-payment-system extension.
Open guide →Use the exact source layer for the exact charge
A rent late charge is a §47a-15a timing and lower-of formula problem. A deposit deduction is a §47a-21 timing and accounting problem. A variable landlord utility statement may instead turn on §16-262e, the meter setup, PURA submetering approval and the Northland decision. Keep those workflows separate.
Official sources
Official 2026 supplement. Section 47a-15a sets the nine-day grace period (four days for week-to-week tenancies), the online-payment-system extension effective January 1, 2026, and the late-charge ceiling; §47a-4 separately makes conflicting rental-agreement provisions unenforceable.
Connecticut General AssemblyConn. Gen. Stat. § 47a-21 — Security deposits ↗Current 2026 supplement governing Connecticut security deposits, caps, forwarding-address timing, itemization, escrow, interest and remedies.
Connecticut Department of BankingRental Security Deposits — Key Issues and Guidance ↗Current official agency guidance, including the 2026 interest rate, 21-day return rule and forwarding-address guidance.
Connecticut General AssemblyConn. Gen. Stat. § 16-262e — Landlord liability for residential utility service ↗Current Connecticut utility statute making the residential property owner/landlord liable for covered building utility costs except service furnished to a dwelling unit on an individually metered or billed basis for the exclusive use of that unit’s occupants.
Connecticut Judicial BranchNorthland Investment Corp. v. PURA, 349 Conn. 35 (2024) ↗Official Connecticut Supreme Court opinion holding that §16-262e(c) precludes the proposed use of ratio utility billing to recoup master-meter building-wide utility costs through tenants’ estimated proportionate shares.
Connecticut General AssemblyConn. Gen. Stat. § 16-19ff — Submetering ↗Current submetering framework requiring PURA approval for covered locations and limiting approved electric submeter charges to the applicable customer-class rate while excluding common-area or other nonexclusive usage from a submetered account.
Connecticut General AssemblyPublic Act 26-113 — Utility charges for residential dwelling units ↗Enacted 2026 law effective October 1, 2026 for rental agreements entered into or renewed on or after that date; it adds a prohibited lease term requiring a tenant to pay utilities without a separate meter measuring utilities delivered exclusively to the dwelling unit.