Finance · Reduction action
Switch to a fossil-free bank
0.5 – 7+ tons CO₂e / year
Low — account switch takes 1–2 hours
Immediate on switch
Every dollar deposited in a conventional bank is lent out — a significant portion to fossil fuel companies. Switching to a fossil-free bank redirects those funds away from fossil fuel financing. At the US average bank balance of $8,000, the estimated saving is approximately 1.5 tons CO₂e per year. The saving scales directly with your balance — higher deposits produce proportionally larger reductions. For many households, this is one of the highest-impact changes available that requires no ongoing lifestyle change.
Most people think of their bank account as a passive place to store money. In practice, banks use deposited funds to make loans and investments — and the largest US commercial banks have collectively directed hundreds of billions of dollars toward fossil fuel projects since the Paris Agreement. According to the Rainforest Action Network’s Banking on Climate Chaos report, the 60 largest banks globally provided over $6.9 trillion in fossil fuel financing between 2016 and 2022.
Fossil-free banks — typically credit unions, community development banks, or institutions certified by the Global Alliance for Banking on Values (GABV) — operate under explicit policies that exclude fossil fuel lending. Switching your deposit account redirects your money away from that financing pipeline. Unlike most lifestyle changes, this action requires no ongoing effort after the initial switch and scales in impact with the size of your balance.
The numbers
Banking emissions are estimated using a carbon intensity factor applied to your deposit balance. The standard banking factor of 0.24 kg CO₂e per dollar per year is derived from analysis by Project Drawdown and GreenFi, based on US commercial bank lending portfolios. The fossil-free banking factor of 0.057 kg CO₂e per dollar per year reflects institutions with explicit fossil fuel exclusion policies, sourced from GreenFi and the Global Alliance for Banking on Values (GABV).
The saving is directly proportional to your balance. The table below shows estimated annual savings at different deposit levels.
| Bank balance | Standard bank (est.) | Fossil-free bank (est.) | Estimated saving |
|---|---|---|---|
| $5,000 | 1.2 tons CO₂e/yr | 0.29 tons CO₂e/yr | 0.9 tons CO₂e/yr |
| $8,000 (US avg) | 1.9 tons CO₂e/yr | 0.46 tons CO₂e/yr | 1.5 tons CO₂e/yr |
| $20,000 | 4.8 tons CO₂e/yr | 1.1 tons CO₂e/yr | 3.7 tons CO₂e/yr |
| $50,000 | 12.0 tons CO₂e/yr | 2.9 tons CO₂e/yr | 9.1 tons CO₂e/yr |
Source: Project Drawdown / GreenFi (standard banking factor 0.24 kg CO₂e/$-yr); GABV / GreenFi (fossil-free factor 0.057 kg CO₂e/$-yr); Fed Survey of Consumer Finances 2022 (US average balance $8,000). All figures are estimates. Actual financed emissions depend on each bank’s specific lending portfolio.
A methodology note on these estimates
Banking financed emissions are harder to measure than transport or energy emissions. The 0.24 kg CO₂e per dollar per year factor is a portfolio-level average across US commercial banks — individual banks vary significantly depending on their lending mix. Some major US banks have substantially higher fossil fuel exposure than the average; others lower. The factor used here represents the best available published estimate for a typical US commercial bank deposit, but it should be treated as an order-of-magnitude indicator rather than a precise figure. The direction of the saving — switching from conventional to fossil-free — is unambiguous. The precise magnitude is not. Full emission factor sources and derivations are documented at decarb.co/methodology.
How to make the switch
Switching bank accounts is more straightforward than most people expect. The steps below cover finding a qualifying institution, opening the account, and managing the transition without disruption.
Identify a qualifying fossil-free bank
Look for banks certified by the Global Alliance for Banking on Values (GABV), federally insured credit unions with explicit fossil fuel exclusion policies, or institutions rated by BankFWD or the Bank.Green platform. Key US options include Amalgamated Bank, Beneficial State Bank, and climate-focused credit unions. The Bank.Green directory lists verified fossil-free institutions by country and account type.
Check account features and FDIC / NCUA coverage
Confirm the institution is FDIC-insured (banks) or NCUA-insured (credit unions) before opening an account. Check that the account type meets your practical needs — online access, ATM network, mobile deposit, and overdraft terms. Most established fossil-free banks offer full-featured checking and savings accounts comparable to conventional banks.
Open the new account before closing the old one
Open the new account and transfer a working balance before redirecting any payments. Run both accounts in parallel for one full billing cycle to catch any automatic payments or direct debits you may have missed. Most US banks offer a Switch Kit that lists all recent automatic transactions — request this before you begin.
Redirect direct deposit and automatic payments
Update your employer’s payroll with the new account details. Update each automatic payment or subscription individually — utilities, subscriptions, insurance, and loan repayments. Allow 1–2 pay cycles for direct deposit changes to take effect before transferring the remaining balance from the old account.
Close the old account formally
Once all payments have cleared from the new account for a full cycle, transfer any remaining balance and request formal account closure in writing. Confirm closure in writing and retain the confirmation for your records. Some banks charge a fee for closing an account opened within the last 90–180 days — check the terms before closing.
Common blockers — and how to get past them
On losing access to a large ATM network
Most fossil-free banks and credit unions participate in shared ATM networks (Allpoint, Co-op, MoneyPass) that collectively offer more fee-free ATM locations than any single major bank. Before switching, confirm which network your new institution uses and check coverage in locations you regularly need cash.
On concerns about the bank’s stability
FDIC and NCUA insurance covers deposits up to $250,000 per depositor per institution regardless of bank size. A GABV-certified bank with FDIC insurance carries identical depositor protection to a major commercial bank. Institutional size does not affect insurance coverage.
On verifying a bank’s fossil fuel policy
Not all banks that market themselves as “green” or “sustainable” have explicit fossil fuel exclusion policies. The Bank.Green platform independently rates banks against verified fossil fuel lending criteria. GABV membership requires adherence to published values-based banking principles including explicit restrictions on harmful sector financing. Use one of these third-party sources rather than the bank’s own marketing materials to verify the policy.
Case study
Illustrative example — not a real individual
Sarah, 34 — Portland, Oregon, renter
Sarah had a checking and savings account with a major US commercial bank, with a combined balance of approximately $22,000. Her Decarb report estimated her banking emissions at 5.3 tons CO₂e per year — ranking it as her second-highest impact category after flights. She did not own a car and had already reduced her diet emissions significantly, making banking one of her most accessible remaining actions.
Sarah switched to Beneficial State Bank after verifying its GABV membership and FDIC insurance. The switch took approximately two hours across two weeks — opening the account, updating direct deposit, redirecting three automatic payments, and closing the old account after one full billing cycle. Her estimated banking emissions fell to approximately 1.3 tons CO₂e per year.
Before
5.3 tons CO₂e/yr
After
1.3 tons CO₂e/yr
Estimated saving
−4.0 tons CO₂e/yr
Related actions
Finance
Switch to green investments
Move investment portfolios away from fossil fuel exposure
Finance
Switch your pension to a green fund
Redirect retirement savings away from fossil fuel holdings
Transport
Switch to an electric vehicle
The highest-impact transport action for most US households
Frequently asked questions
How does my bank account affect my carbon footprint?
Banks use deposited funds to make loans and investments. A portion of most major US commercial bank lending portfolios is directed toward fossil fuel extraction, infrastructure, and power generation. This creates financed emissions — emissions associated with the economic activity your deposits help fund. According to Project Drawdown and GreenFi analysis, the average US commercial bank deposit carries an estimated carbon intensity of 0.24 kg CO₂e per dollar per year.
What makes a bank genuinely fossil-free?
A genuinely fossil-free bank has an explicit, published policy prohibiting lending to fossil fuel extraction, infrastructure, or power generation companies. Membership in the Global Alliance for Banking on Values (GABV) requires adherence to values-based banking principles that include restrictions on harmful sector financing. The Bank.Green platform independently rates institutions against verified fossil fuel exclusion criteria. “Green” or “sustainable” marketing language without a published exclusion policy is not sufficient — verify using a third-party source.
Is my money safe at a smaller fossil-free bank?
FDIC insurance (for banks) and NCUA insurance (for credit unions) cover deposits up to $250,000 per depositor per institution regardless of institutional size. A GABV-certified bank with FDIC insurance provides identical depositor protection to a major commercial bank. Bank size affects product range and ATM network coverage but has no bearing on the safety of insured deposits.
How long does switching banks actually take?
Opening a new account typically takes 15–30 minutes online. The full transition — redirecting direct deposit, updating automatic payments, and closing the old account — takes approximately 2–4 weeks if run in parallel with the existing account for one billing cycle. The total active time involved is typically 1–2 hours spread across that period. It is one of the lower-effort high-impact actions available.
Does switching banks actually change anything, or is the impact symbolic?
The impact is real but operates through a systemic mechanism rather than a direct one. When deposits move from conventional banks to fossil-free institutions, conventional banks have less capital available for fossil fuel lending, and fossil-free institutions have more capital for clean lending. The effect of any individual account is small. At scale — the Rainforest Action Network estimates that collective consumer switching pressure has contributed to major banks restricting some fossil fuel financing categories — the mechanism is meaningful. The estimated emissions figure on your Decarb report reflects the portfolio-level impact of your deposits, not a claim that your specific dollars funded a specific project.
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Sources
- Project Drawdown / GreenFi — banking carbon intensity factor, US commercial banks: 0.24 kg CO₂e per dollar per year.
- Global Alliance for Banking on Values (GABV) / GreenFi — fossil-free banking factor: 0.057 kg CO₂e per dollar per year. gabv.org
- Federal Reserve Survey of Consumer Finances 2022 — US median and average bank deposit balances. federalreserve.gov/publications/files/scf23.pdf
- PCAF (Partnership for Carbon Accounting Financials) v3 — financed emissions methodology for banking and investment portfolios. carbonaccountingfinancials.com
- Rainforest Action Network — Banking on Climate Chaos 2023. bankingonclimatechaos.org
- Bank.Green — independent fossil fuel lending ratings for retail banks. bank.green