[Q] Query for outstanding payment per month

Question

I have data like this:
Bill: $100
In January, I paid $50
In Febuary, I paid $30
In March, I paid $20
I used 2 tables (table A and table B)
Table A used to save total amount of the bill. Table B used to save how much I paid the bills. Table A Primary Key is the Foreign Key for Table B.
I need to make a report like this:
In January the report will be:
Bill: $100
Payment1: $50
In Febuary:
Bill: $100
Payment1: $50
Payment2: $30
In March:
Bill: $100
Payment1: $50
Payment2: $30
Payment3: $20
In May it won't appear because it already paid in March.
This is my Query:
SELECT A.BILL, A.BILL_DATE, B.PAYMENT, B.PAYMENT_DATE
FROM TABLE_A AS A
LEFT JOIN TABLE_B AS B ON A.BILL_NO = B.BILL_NO
WHERE MONTH(A.BILL_DATE) <= @PERIOD_MONTH AND YEAR(A.BILL_DATE) = @PERIOD_YEAR

Answer 1

Thanks for answering, but I just tried and I don't think its the result.
This is my table structure:
CREATE TABLE BILL
BILL_ID INT INDENTITY NOTNULL
BILL_DATE DATETIME
BILL_AMOUNT NUMERIC(10,2)
BILL_BALANCE NUMERIC(10,2)
CREATE TABLE PAYMENT
PAYMENT_ID INT IDENTITY NOTNULL
BILL_ID INT
PAYMENT_DATE DATETIME
PAYMENT_AMOUNT NUMERIC(10,2)
)INSERT INTO @BILL VALUES(1,'2014-01-01',100,0)PAYMENT 1INSERT INTO @PAYMENT VALUES(1,1,'2014-01-02',50)
UPDATE BILL SET BILL_BALANCE = BILL_BALANCE + 50 WHERE BILL_ID = 1PAYMENT 2INSERT INTO @PAYMENT VALUES(1,1,'2014-02-01',30)
UPDATE BILL SET BILL_BALANCE = BILL_BALANCE + 30 WHERE BILL_ID = 1
Everytime I paid, BILL_BALANCE = BILL_BALANCE + PAYMENT_AMOUNT
In january: 
BILL_AMOUNT = $100
BILL_BALANCE = $50
In Feb:
BILL_BALANCE = $80 etc.
at first I have 11 Payment data, after I'm using cross join, it become 780 data.