A
AZEO (All Zero Except One)
A utilization strategy where you pay all credit cards to $0 except one, which carries a small balance (1-9%). This reports the lowest possible utilization across your profile while showing activity. Best done before a reporting date.
Learn the AZEO utilization method →Annual Fee
A yearly charge for holding a credit card. Many premium rewards cards charge $95-$695/year. Credit stackers weigh annual fees against rewards earned.
Is your annual fee worth it? →Authorized User (AU)
A person added to someone else's credit card account. The account history appears on the AU's credit report, which can help build credit quickly.
Authorized user strategy for credit building →APR (Annual Percentage Rate)
The yearly interest rate charged on carried balances. Credit stackers target 0% APR introductory offers to leverage capital interest-free.
How to negotiate a lower APR →Average Age of Accounts (AAoA)
The mean age of all your credit accounts. A longer average age signals stability to lenders. Opening many new cards lowers it, which is why spacing applications matters in credit stacking.
Credit age optimization strategies →B
Balance Transfer
Moving debt from one credit card to another, typically to take advantage of a lower or 0% APR offer. A key tool in credit stacking for managing and reducing interest costs.
Balance transfer stacking strategy →Billing Cycle
The period between two statement closing dates, usually about 30 days. Understanding your billing cycle is essential for timing payments and managing utilization reporting.
Billing cycle timing explained →BLOC (Business Line of Credit)
A revolving credit line for businesses. Banks like PNC, BOA, and US Bank offer BLOCs up to $100k. Different from a business credit card.
Building business credit with credit cards →Bureau
One of the three major credit reporting agencies: Experian, TransUnion, or Equifax. Different banks pull different bureaus depending on your state.
Credit score factors explained →Bust-Out Score
An internal bank metric that flags accounts suspected of planning to max out and default. Rapid balance increases or cash advance patterns can trigger this.
C
Cash Advance
Withdrawing cash from your credit card. Carries higher APR (often 25%+), no grace period, and usually a 3-5% fee. Avoid in credit stacking — it can also trigger bust-out flags.
Churning
Repeatedly opening and closing credit cards to earn signup bonuses. Related to but different from credit stacking, which focuses on building and maintaining a portfolio of cards long-term.
Credit stacking vs. churning comparison →CLI (Credit Limit Increase)
Requesting a higher credit limit on an existing card. Can be a soft or hard pull depending on the issuer. AMEX allows CLIs every 35-90 days.
How to get a credit limit increase without a hard pull →Collections
A derogatory mark on your credit report indicating a debt was sent to a collection agency. Can remain on your report for 7 years and significantly damages your score.
How to remove collections from your report →Cooling Period
The recommended wait time between credit card applications. Typically 30-90 days depending on the bank and your profile.
Best order to apply for credit cards →Credit Mix
The variety of credit account types on your report — credit cards, installment loans, mortgages. Makes up about 10% of your FICO score. Having diverse account types signals responsible credit management.
How credit score factors work →Credit Report
A detailed record of your credit history maintained by each bureau. Includes accounts, balances, payment history, inquiries, and public records. Review yours before any application.
How to read your credit report →Credit Stacking
The strategy of systematically opening and managing multiple credit cards to maximize available credit, rewards, and 0% APR windows. The core concept behind StackEasy.
Credit Stacking 101 →Credit Utilization
The percentage of your available credit that you're using. Calculated as (total balances / total limits). Under 30% is good, under 10% is excellent. The single biggest controllable factor in your credit score.
Credit utilization optimization guide →D
Debt-to-Income (DTI)
The ratio of your monthly debt payments to your monthly income. Banks use this to determine how much additional credit you can handle.
DTI and credit card approvals →Downgrade (Product Change)
Switching a premium credit card to a no-annual-fee version with the same issuer. Preserves your credit history and account age while eliminating the fee.
Credit card downgrade strategies →DUNS Number
A unique nine-digit identifier for businesses, issued by Dun & Bradstreet. Required for many business credit applications and government contracts.
How to build business credit fast →E
EIN (Employer Identification Number)
A tax ID for businesses, like an SSN but for your LLC. While not always required (you can use your SSN as a sole proprietor), having an EIN can result in higher limits.
EIN-only business credit cards →Experian
One of the three major credit bureaus. The most commonly pulled bureau by banks, especially in western states. Chase, AMEX, and many others default to Experian.
Credit Karma vs. Experian comparison →Equifax
One of the three major credit bureaus. More commonly pulled in southeastern states. Truist and some PNC products pull Equifax.
F
5/24 Rule
Chase's policy of denying most credit card applications if you've opened 5 or more personal credit cards (across ALL issuers) in the past 24 months. Can sometimes be bypassed through a Relationship Manager.
Chase 5/24 and issuer application rules →FICO Score
The most widely used credit scoring model, ranging from 300-850. Created by Fair Isaac Corporation. Most lenders use FICO for credit decisions. Different from VantageScore.
What factors make up your FICO score →Foreign Transaction Fee
A 1-3% surcharge on purchases made outside the US or in foreign currencies. Many travel and premium cards waive this fee entirely — an important factor when building a travel stack.
Best travel credit cards without foreign fees →Freeze (Credit Freeze)
Locking your credit report at a specific bureau so no one can pull it. Credit stackers strategically freeze bureaus to control which bureau a bank pulls.
Credit freeze vs. credit lock explained →G
Gardening
A period of intentionally not applying for new credit to let existing accounts age and inquiries fall off. Common advice after a heavy application cycle in credit stacking.
When to pause and when to apply →Grace Period
The time between your statement closing date and payment due date (typically 21-25 days). During this period, no interest accrues on new purchases if you paid your last statement in full.
Grace period strategy guide →H
Hard Pull (Hard Inquiry)
A credit check that appears on your report and can temporarily lower your score by 5-10 points. Triggered by credit applications. Too many in a short period raises red flags.
Credit score factors for card maximizers →I
Inquiry
See Hard Pull. A record of a lender checking your credit report. Inquiries from the same type of lender within 14-45 days may be grouped as one.
L
Leverage
Using borrowed capital (credit) to fund business operations or investments. The core principle behind credit stacking: using other people's money strategically.
Using 0% APR cards to fund a business →M
Minimum Spend
The amount you must charge within a set period (usually 3 months) to earn a signup bonus. Typical ranges are $500-$5,000. Plan your spending across cards to hit each threshold.
Signup bonus spending strategy →N
NAICS Code
North American Industry Classification System code. Your business classification. Changing to 541611 (Management Consulting) can improve approval odds at some banks.
Net-30 Vendor Accounts
Trade credit accounts that give you 30 days to pay. They report to business credit bureaus and help build your business credit profile before applying for business credit cards.
Best net-30 vendor accounts for business credit →O
0% APR Window
An introductory period (typically 9-21 months) where no interest is charged on purchases and/or balance transfers. The primary tool for leveraging credit interest-free.
Best balance transfer cards in 2026 →P
Paydex Score
Dun & Bradstreet's business credit score, ranging from 0-100. Based on how promptly you pay vendors. A score of 80+ (paying on time) is considered good for business credit applications.
How to build business credit fast →Personal Guarantee (PG)
When you personally guarantee a business credit card or loan. Most business cards require a PG, meaning you're personally liable for the debt.
Business credit without a personal guarantee →Pre-Qualification (Pre-Qual)
A soft-pull check to see if you're likely to be approved. Doesn't affect your credit score. Available from AMEX, Capital One, and others.
R
Reconsideration Line
A phone number you can call after a credit card denial to speak with an analyst who can overturn the decision. Success rates vary by issuer — Chase and Citi are more receptive than others.
How to call a reconsideration line →Relationship Manager (RM)
A dedicated banker who can help with applications and sometimes bypass standard rules (like Chase's 5/24). Available at AMEX, BOA, Chase, PNC, and US Bank.
Reporting Date
The date your credit card issuer reports your balance to the bureaus. This is the balance that affects your utilization score. Usually the statement closing date.
Statement date vs. due date explained →Rewards Optimization
Strategically using different cards for different purchase categories to maximize points, miles, and cashback. A key benefit of having multiple cards.
Credit card rewards optimization guide →S
Seasoning
The amount of time an account has been open. Some banks require checking accounts to be 'seasoned' (open for 30+ days) before approving credit applications. Also affects average account age.
Secured Credit Card
A credit card backed by a cash deposit that serves as your credit limit. A starting point for building or rebuilding credit before qualifying for unsecured cards used in stacking.
Best credit cards for bad credit →Signup Bonus (Welcome Bonus)
A reward offered by issuers when you open a new card and meet minimum spending requirements. Can range from $150 cash back to 100,000+ points. A major incentive in credit stacking.
Signup bonus strategy guide →Sock Drawer
Keeping a credit card open but unused (in your 'sock drawer'). Useful for maintaining credit history length and total available credit without paying annual fees on no-fee cards.
Soft Pull (Soft Inquiry)
A credit check that does NOT appear on your report or affect your score. Pre-qualifications, personal credit monitoring, and some bank products use soft pulls.
Statement Balance
The total balance on your card when the billing cycle closes. This is what gets reported to bureaus and affects your utilization percentage.
Statement date vs. due date optimization →Statement Date vs. Due Date
The statement date is when your billing cycle closes and your balance is reported. The due date is when payment is due (21-25 days later). Knowing the difference is critical for utilization management.
Statement date vs. due date explained →T
TransUnion
One of the three major credit bureaus. Commonly pulled alongside Experian or Equifax. Capital One and Barclays frequently pull TransUnion.
2/90 Rule
AMEX's policy of limiting you to 2 new credit card approvals within any 90-day window. Plan your AMEX applications accordingly.
Issuer churning rules breakdown →15/3 Payment Trick
A payment timing strategy where you make two payments per billing cycle — one 15 days before your due date and another 3 days before. Can help lower reported utilization.
The 15/3 payment trick explained →U
Utilization
See Credit Utilization. The percentage of available credit being used. Keep under 10% for the best score impact.
What is a good utilization ratio? →V
VantageScore
An alternative credit scoring model created jointly by Experian, TransUnion, and Equifax. Ranges from 300-850 like FICO but weighs factors differently. Credit Karma uses VantageScore.
Credit Karma vs. Experian scoring →Velocity
The speed at which you're opening new accounts. Too fast triggers bank fraud alerts and increases denial risk. Most experts recommend no more than 2-4 new accounts per month.
Credit card velocity strategy →