Same-day ACH transactions surged 29.5% to 435.7 million payments in the second quarter of this year, Nacha said in a press release on July 30. Same-day ACH transactions surged 29.5% to 435.7 million payments in the second quarter of this year, Nacha said in a press release on July 30. Same-day ACH transactions surged 29.5% to 435.7 million payments in the second quarter of this year, Nacha said in a press release on July 30. Same-day ACH transactions surged 29.5% to 435.7 million payments in the second quarter of this year, Nacha said in a press release on July 30. Same-day ACH transactions surged 29.5% to 435.7 million payments in the second quarter of this year, Nacha said in a press release on July 30.