It moves the start. The clock that matters begins when the full qualifying capital is invested or irrevocably committed and the petition is filed, so a payment schedule that runs eighteen months delays the filing rather than running alongside it.
Two calendars that people wrongly run in parallel
Grigor's commercial calendar and his immigration calendar only look similar. The buyout finishes when the last tranche lands. The immigration process starts, in practical terms, once enough capital exists to commit the whole qualifying amount, and adjudication, visa availability where relevant, and consular or adjustment steps follow after that.
Adding two years of conditional residence and then the Form I-829 window in the ninety days before the second anniversary gives a total span that families consistently underestimate. Two dates deserve to be written on a wall: the date a child turns 21, and January 1, 2027, when the statutory adjustment to the qualifying amounts begins, since terms in force when he commits are the ones that matter and should be re-verified at that moment.