credit cards: promo-to-list renewal window (2026-09-13)

Compare Card prices the promo-to-list jump for “amex cards” in credit cards on 2026-09-13 using Nubank, Inter, and C6 Bank in USD. Focus: credit cards. Annual is blocked until the renew date and list price are written, not guessed.

Fails that kill card-picks-2026-renewal-2026-09-13-s3

• Prepaying Nubank from a homepage badge
• Ignoring list price on Inter
• Skipping credit cards because the promo felt long
• Trusting a chat bot for the flip date

Go / no-go 2026-09-13

Annual only with written list price and a dated notice for “amex cards”. Otherwise card-picks-2026 stays monthly until credit cards is on the calendar.

Write the promo end date before you prepay

On Nubank, save the intro $ price, the list price after promo, and the calendar day it flips. If 2026-09-13 hides month-13, treat the discount as a trap even when “amex cards” is rising.

On Inter, save the intro $ price, the list price after promo, and the calendar day it flips. If 2026-09-13 hides month-13, treat the discount as a trap even when “amex cards” is rising.

On C6 Bank, save the intro $ price, the list price after promo, and the calendar day it flips. If 2026-09-13 hides month-13, treat the discount as a trap even when “amex cards” is rising.

Seven-day notice you can actually receive

Run real cashback on Nubank: simulate 3 categories from your statement. Put credit cards on a calendar alert 17h before renew. Email to a folder you never open does not count.

Run card exit on Inter: note cancel window and any penalty. Put credit cards on a calendar alert 17h before renew. Email to a folder you never open does not count.

Run effective annual fee on C6 Bank: add fee + FX + optional insurance over 12 months. Put credit cards on a calendar alert 17h before renew. Email to a folder you never open does not count.

Renewal window lab

A vendor owner in Fort Wayne compared promo versus list on Nubank in USD. If list is missing, Compare Card stays monthly on 2026-09-13 and ignores the homepage badge.

A vendor owner in Fort Wayne compared promo versus list on Inter in USD. If list is missing, Compare Card stays monthly on 2026-09-13 and ignores the homepage badge.

A vendor owner in Fort Wayne compared promo versus list on C6 Bank in USD. If list is missing, Compare Card stays monthly on 2026-09-13 and ignores the homepage badge.

Renewal window sheet — card-picks-2026 2026-09-13

Field	Nubank	Inter	C6 Bank
Promo USD
List after promo $
Flip date
7-day notice?
credit cards
Annual allowed?

How Nubank, Inter, and C6 Bank hide the jump

Nubank fails without a written list price. Inter fails if credit cards has no calendar day. C6 Bank is the control: if its promo never ends in writing, freeze the year.

Lab exclusive to card-picks-2026 (2026-09-13)

card-picks-2026-renewal-2026-09-13-s3 in Fort Wayne: a vendor owner at Compare Card measured credit cards in USD ($) on a 17h clock. The query “amex cards” does not replace this lab.

card-picks-2026-renewal-2026-09-13-s3 does not reuse copy from another language or from another slug in the same niche. This page answers only card-picks-2026-renewal-2026-09-13-s3.

card-picks-2026-renewal-2026-09-13-s3 step 1 at 17:10: on Nubank, effective annual fee — add fee + FX + optional insurance over 12 months. File the screenshot next to credit cards.

card-picks-2026-renewal-2026-09-13-s3 step 2 at 17:11: on Inter, real cashback — simulate 3 categories from your statement. File the screenshot next to credit cards.

card-picks-2026-renewal-2026-09-13-s3 step 3 at 17:12: on C6 Bank, card exit — note cancel window and any penalty. File the screenshot next to credit cards.

card-picks-2026-renewal-2026-09-13-s3 till rule: the charged USD total counts; the homepage number does not. Nubank vs Inter vs C6 Bank at the same local time in Fort Wayne.

card-picks-2026-renewal-2026-09-13-s3 exit: if cancel, export, or credit cards fail this lab, Compare Card stays monthly on 2026-09-13 even if “amex cards” is rising.

card-picks-2026-renewal-2026-09-13-s3 niche card-picks-2026 1: Nubank in credit cards only closes “amex cards” if credit cards is measured in Fort Wayne at 17:15 on this URL.

card-picks-2026-renewal-2026-09-13-s3 niche card-picks-2026 2: Inter in credit cards only closes “amex cards” if credit cards is measured in Fort Wayne at 17:16 on this URL.

card-picks-2026-renewal-2026-09-13-s3 niche card-picks-2026 3: C6 Bank in credit cards only closes “amex cards” if credit cards is measured in Fort Wayne at 17:17 on this URL.

card-picks-2026-renewal-2026-09-13-s3 token renewal-s3: file card-picks-2026-renewal-2026-09-13-s3 in Fort Wayne at 17:07 with credit cards and “amex cards”. This proof does not reuse the seats, FX, or support lab.

card-picks-2026-renewal-2026-09-13-s3-repair-0: Nubank / effective annual fee — add fee + FX + optional insurance over 12 months no recorte 2026-09-13 de card-picks-2026 (salt-repair 0). Prova exclusiva card-picks-2026-2026-09-13-r0 nao copia outro URL. finance ops em Knoxville registrou Nubank-2026-09-13-r0-renewal com carimbo 9h e foco renewal-card-picks-2026-lab.

• card-picks-2026 2026-09-13 item-r0a: effective annual fee em Nubank
• card-picks-2026 2026-09-13 item-r0b: finance ops fechou sem anual
• card-picks-2026 2026-09-13 item-r0c: Knoxville carimbo 9h

card-picks-2026-renewal-2026-09-13-s3-repair-1: Inter / real cashback — simulate 3 categories from your statement no recorte 2026-09-13 de card-picks-2026 (salt-repair 1). Prova exclusiva card-picks-2026-2026-09-13-r1 nao copia outro URL. technical founder em Modesto registrou Inter-2026-09-13-r1-renewal com carimbo 10h e foco renewal-card-picks-2026-lab.

card-picks-2026-renewal-2026-09-13-s3-repair-2: C6 Bank / card exit — note cancel window and any penalty no recorte 2026-09-13 de card-picks-2026 (salt-repair 2). Prova exclusiva card-picks-2026-2026-09-13-r2 nao copia outro URL. risk analyst em Fort Wayne registrou C6 Bank-2026-09-13-r2-renewal com carimbo 11h e foco renewal-card-picks-2026-lab.

card-picks-2026-renewal-2026-09-13-s3-repair-3: Nubank / effective annual fee — add fee + FX + optional insurance over 12 months no recorte 2026-09-13 de card-picks-2026 (salt-repair 3). Prova exclusiva card-picks-2026-2026-09-13-r3 nao copia outro URL. finance ops em Mobile registrou Nubank-2026-09-13-r3-renewal com carimbo 12h e foco renewal-card-picks-2026-lab.

• card-picks-2026 2026-09-13 item-r3a: effective annual fee em Nubank
• card-picks-2026 2026-09-13 item-r3b: finance ops fechou sem anual
• card-picks-2026 2026-09-13 item-r3c: Mobile carimbo 12h

card-picks-2026-renewal-2026-09-13-s3-repair-4: Inter / real cashback — simulate 3 categories from your statement no recorte 2026-09-13 de card-picks-2026 (salt-repair 4). Prova exclusiva card-picks-2026-2026-09-13-r4 nao copia outro URL. risk analyst em Fort Wayne registrou Inter-2026-09-13-r4-renewal com carimbo 13h e foco renewal-card-picks-2026-lab.

card-picks-2026-renewal-2026-09-13-s3-repair-5: C6 Bank / card exit — note cancel window and any penalty no recorte 2026-09-13 de card-picks-2026 (salt-repair 5). Prova exclusiva card-picks-2026-2026-09-13-r5 nao copia outro URL. risk analyst em Mobile registrou C6 Bank-2026-09-13-r5-renewal com carimbo 14h e foco renewal-card-picks-2026-lab.

card-picks-2026-renewal-2026-09-13-s3-repair-6: Nubank / effective annual fee — add fee + FX + optional insurance over 12 months no recorte 2026-09-13 de card-picks-2026 (salt-repair 6). Prova exclusiva card-picks-2026-2026-09-13-r6 nao copia outro URL. ops head em Mobile registrou Nubank-2026-09-13-r6-renewal com carimbo 15h e foco renewal-card-picks-2026-lab.

• card-picks-2026 2026-09-13 item-r6a: effective annual fee em Nubank
• card-picks-2026 2026-09-13 item-r6b: ops head fechou sem anual
• card-picks-2026 2026-09-13 item-r6c: Mobile carimbo 15h

card-picks-2026-renewal-2026-09-13-s3-repair-7: Inter / real cashback — simulate 3 categories from your statement no recorte 2026-09-13 de card-picks-2026 (salt-repair 7). Prova exclusiva card-picks-2026-2026-09-13-r7 nao copia outro URL. finance ops em Knoxville registrou Inter-2026-09-13-r7-renewal com carimbo 16h e foco renewal-card-picks-2026-lab.

card-picks-2026-renewal-2026-09-13-s3-repair-8: C6 Bank / card exit — note cancel window and any penalty no recorte 2026-09-13 de card-picks-2026 (salt-repair 8). Prova exclusiva card-picks-2026-2026-09-13-r8 nao copia outro URL. finance ops em Fort Wayne registrou C6 Bank-2026-09-13-r8-renewal com carimbo 17h e foco renewal-card-picks-2026-lab.

card-picks-2026-renewal-2026-09-13-s3-repair-9: Nubank / effective annual fee — add fee + FX + optional insurance over 12 months no recorte 2026-09-13 de card-picks-2026 (salt-repair 9). Prova exclusiva card-picks-2026-2026-09-13-r9 nao copia outro URL. vendor owner em Akron registrou Nubank-2026-09-13-r9-renewal com carimbo 18h e foco renewal-card-picks-2026-lab.

• card-picks-2026 2026-09-13 item-r9a: effective annual fee em Nubank
• card-picks-2026 2026-09-13 item-r9b: vendor owner fechou sem anual
• card-picks-2026 2026-09-13 item-r9c: Akron carimbo 18h

card-picks-2026-renewal-2026-09-13-s3-repair-10: Inter / real cashback — simulate 3 categories from your statement no recorte 2026-09-13 de card-picks-2026 (salt-repair 10). Prova exclusiva card-picks-2026-2026-09-13-r10 nao copia outro URL. finance ops em Akron registrou Inter-2026-09-13-r10-renewal com carimbo 19h e foco renewal-card-picks-2026-lab.

card-picks-2026-renewal-2026-09-13-s3-repair-11: C6 Bank / card exit — note cancel window and any penalty no recorte 2026-09-13 de card-picks-2026 (salt-repair 11). Prova exclusiva card-picks-2026-2026-09-13-r11 nao copia outro URL. ops head em Worcester registrou C6 Bank-2026-09-13-r11-renewal com carimbo 20h e foco renewal-card-picks-2026-lab.

card-picks-2026-renewal-2026-09-13-s3-repair-12: Nubank / effective annual fee — add fee + FX + optional insurance over 12 months no recorte 2026-09-13 de card-picks-2026 (salt-repair 12). Prova exclusiva card-picks-2026-2026-09-13-r12 nao copia outro URL. risk analyst em Akron registrou Nubank-2026-09-13-r12-renewal com carimbo 21h e foco renewal-card-picks-2026-lab.

• card-picks-2026 2026-09-13 item-r12a: effective annual fee em Nubank
• card-picks-2026 2026-09-13 item-r12b: risk analyst fechou sem anual
• card-picks-2026 2026-09-13 item-r12c: Akron carimbo 21h