Since Moonfaery_87 is obviously getting quite upset, I'm going to add my two cents. And I know this is going to cause of uproar, and you will be advised to pay no attention to the woman behind the curtain, but here it is anyways. I just got approved for my spousal visa, and didn't include a budget.
I didn't say that I would be paying my in-laws rent, and my in-laws stated in a letter that they would support us financially and let us live with them until we were established in the UK. We got approved in one day, without any problems or calls for the consulate.
When you finish filling out your application, you will be a list of supporting documents to provide. Ours was:
* completed application form VAF2
* your current passport
* your old passport or a copy of it
* Immigration status (Original not copy):e.g. Permanent residence card, Valid I-94 H1-B - L-1 - B-1 I-20 (Signed on reverse side) IAP-66 Employment authorisation card with advance parole document
* evidence of funds available to you, in the form of bank statements covering at least the last three months
* a written invitation from your sponsor in the UK (if applicable) and a copy of their British passport/EU passport or UK residence permit
* your original marriage certificate
* evidence of your sponsors accommodation in the UK, for example mortgage or tenancy documents, etc.
* evidence of your sponsors employment or intended employment in the UK, for example a contract or offer of employment, salary slips, etc.
* evidence of contact between you and your sponsor for example letters, email, telephone bills, etc.
* One recent colour passport photograph (not more than six months old) Please note: scanned or copies of photos are not acceptable
* After you have attended your appointment please send your documents to: British Consulate General, Los Angeles, 11766 Wilshire Blvd, Suite 1200, Los Angeles, CA 90025
It didn't mention a budget, so I didn't include one. There are thousands of people who apply for UK visas who never stumble across uk-yankee.com and would never think to include a budget. I don't think they are all getting denied.